Hassle-free shopping with our 30-day return policy.
Hassle-free shopping with our 30-day return policy.
Trusted since 2012 — Greentoe is where smart shoppers save big!
Trusted since 2012 — Greentoe is where smart shoppers save big!
4275 offers placed in the last 24 hours.
4275 offers placed in the last 24 hours.
Shop with confidence. Every product is brand new and warranty-backed from authorized retailers.
Brand new & warranty-backed products from authorized retailers.
Name your price. Negotiate your deal. Save big on every purchase.
Name your price. Negotiate your deal. Save big on every purchase.
Hassle-free shopping with our 30-day return policy.
Hassle-free shopping with our 30-day return policy.
Trusted since 2012 — Greentoe is where smart shoppers save big!
Trusted since 2012 — Greentoe is where smart shoppers save big!
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Sennheiser HD 4.40 BT Wireless Bluetooth Headphones
Model: 506782
1/1
- Bluetooth 4.0 and NFC Pairing
- Intuitive Earcup-Mounted Controls
- Dual Omnidirectional Microphones
- Foldable Design for Travel and Storage
- Built-In Rechargeable Battery
- Sennheiser HD 4.40 BT Wireless Bluetooth Headphones
- Carry Case
- Audio Cable with 2.5mm and 3.5mm Jack Plug
- USB Charging Cable with Micro-USB Connector
- Limited 2-Year Warranty
Authorized RetailersManufacturer warranty included
New Products OnlyWe never sell used merchandise
Free ShippingOn most items
30 Days Returns*Minimum return policy
As Seen On...
View Article“More Retailers See Haggling as a Price of Doing Business. ”
View Article“Consumer Reporter Lynda Baquero shows a website where you can bid on the items you want, from the manufacturer of choice, and known within a day or two if your offer is accepted.”
View Article“Greentoe wants to make the buying process easier by letting you name the price you want to pay for an item, and then they'll find a bargain on your behalf...”
View Article“An E-Commerce Site Where You Can Haggle Down The Price”
View Article“I don’t say this often, but there’s a new app that just might dramatically change the way you shop, and it’s called Greentoe.”
View Article“Name Your Price for Gadgets on New 'Priceline for Tech' Site”
View Article“More Retailers See Haggling as a Price of Doing Business. ”
View Article“Consumer Reporter Lynda Baquero shows a website where you can bid on the items you want, from the manufacturer of choice, and known within a day or two if your offer is accepted.”
What People Say...
wsawalhahgmail.com
5/5
GE Cafe
"Great price always. This is my second purchase for my home appliances. "View article
KarenP193703804
5/5
Very pleased
"Easy to manuever & quick customer service response"View article
Drizzt1501670422
5/5
Great Deal
"Best deal as of today, beats all the large sellers!"View article
Reviewer1907313029
5/5
ImchillinwithGreentoe
"I was looking me dream fridge and you guys had it at a price I could afford!!!!! Thanks SO much!"View article
Reviewer3655183426
5/5
Great deal!
"$800 cheaper than costco. Can’t believe it."View article
Reviewer206348307
5/5
"This item was 20% less than other vendors with no taxes love that"View article
JasGod
5/5
Incredible Site & Service
"Absolutely fantastic site to get deals on items especially if you missed out on sales in the past. I cannot recommend Greentoe enough."View article
maxmcgillvo
5/5
Low Price Quick purchase
"Super low price and almost immediate purchase. Easy and saves money"View article
Reviewer4070996470
5/5
Easy as making money
"Greentoe has the same product but saved $100 dollars as other retailers. Super easy checkout."View article
swperk
5/5
Great selection, great prices, fast shipping!
"I found just the TV I was looking for at the best price! Easy to make the purchase, and the TV is brand new with a full factory warranty. Shipping was lightning-fast and the TV shipping box was packed inside another box, so it arrived in perfect condition. Highly recommended!"View article
Reviewer3172597289
5/5
HAPPY DAYS
"I've been searching for a Bass Amplifier. Fender is a great product, and ordering the Amplifier was an easy and satisfying process. "View article
Reviewer1874135251
5/5
What a steal!
"Greentoe accepted my big for a brand new tv"View article
Reviewer1265174373
5/5
Superfast savincash
"Exactly like the title- buddy turned me onto you guys. seems pretty bad-a! Killer business model! Welcome to the 21st century!"View article
DealMaker1217344194
5/5
More like DealToe Now
"I’ve been shopping for a soundbar/ surround sound that I wanted and found it as a Greentoe Now offer. I had already made an offer that was countered at $962. Thought I’d take one more look and found this Greentoe Now deal and after tax came back at $878.****. Great deal!"View article
Reviewer42848220
5/5
Best Price Out There
"Bought the JBL speaker for $70 cheaper than other retailers!"View article
Reviewer4072874482
5/5
Great site!
"Excellent price and easy checkout! Lens arrived on time with good shipment tracking!"View article
Reviewer116527698
5/5
Turntable Treasure
"Found a great Turntable at a Great Price…Easy check out! Would gladly do business with again. Plus free shipping!"View article
Reviewer4137920598
5/5
Finally!
"Been wanting this TV for so long but it was always just slightly over my budget. Greentoe helped me get there!"View article
HappyinCocoa217
5/5
Oled Steal
"I just saved a minimum of $800.00 on LG's current 2nd best model, the 77 inch C6H. Thank you greentoe."View article
Reviewer3562909457
5/5
Easy Peasy and Best Deal
"I googled what I was looking for and Greentoe came up. It was super easy to order with just a few clicks. And the best part.... It was the best deal I could find! Amazing. I can't wait to have my gas range."View article
Reviewer531177248
5/5
best price by far, seemless checkout
"Found you after days of searching. Thanks for saving me hundresd of $$$"View article
Reviewer374243867
5/5
Feels like I've gained some control over pricing
"The buying concept is pretty great. Allows me to negotiate without having to actually converse. "View article
Reviewer325911081
5/5
Blowing the budget cause these deals are amazing
"Got a top tier sound bar and TV for the price I was going to get just the tv. Awesome Site!"View article
Reviewer3707316049
5/5
Best price, easy process.
"I randomly found this site when something for a new bulova watch I wanted, and it was the lowest price I had seen. The checkout was easy. I couldn't ask for better."View article
1ezbuyer
5/5
Great Prices and Great Experience
"I’ve purchased two TVs through Greentoe, and both experiences have been excellent. Best prices I could find anywhere, and both TVs were delivered right to my door without any issues.
My only mistake was forgetting that Greentoe offers a lot more than just TVs! I recently purchased applioances elsewhere and afterward realized I should have checked Greentoe first.
Greentoe will definitely be one of the first places I check before making a major purchase. Let's get the word out, and let the free market dictate prices. Craig Barton Scottsdale AZ"View article
Reviewer1985157698
5/5
Easy process and great price
"Simple shopping and amazing pricing "View article
Reviewer3999111024
5/5
hightone
"simple shopping experience.
great pricing."View article
Reviewer567752806
5/5
Happy customer
"Found a great deal on a product I had been scanning the market for"View article
Scaminjs
5/5
The only way to buy a TV
"Bought three TVs now and will come back every time"View article
Reviewer4212670136
5/5
Get it CHEAP!
"Been looking at a keyboard workstation for a while. Price seemed too good to be true. Everything went through and now I can create. Saved almost a thousand dollars."View article
GreatDeal2026
5/5
Smokin Football Season
"Great deal on 98" TCL TV & JBL Sound System!"View article
Reviewer3089809705
5/5
"Great price. Easy transaction. "View article
Reviewer729948542
5/5
"Great website. easy to navigate and understand. warranty information was clear and concise. competitive offering price"View article
Reviewer3148884809
5/5
Amazing
"Wasn't sure about this site but it will be my first stop when needing other equipment in the future. Communication was over the top good."View article
Reviewer2544461434
5/5
Best price!
"Placing my order for a new Samsung 43” frame tv was quick and easy. Plus I saved $100!"View article
Reviewer4041539228
5/5
Easy breezy
"Nice price easy interface no fuss no drama authorized dealer "View article
Reviewer3470833137
5/5
Awesome is an understatement
"Been looking for the LG 65" C5 everywhere for a good price. Greentoe did it for me. Football season here I come. "View article
Reviewer1661460878
5/5
Smoked
"Stumbled across this site, checked it out to see if it was legit, and Voilà I bit the bullet."View article
Ap3151389186
5/5
Great Deal
"Can't beat this. So much punch for a good price"View article
Kevybean04
5/5
Best price, Brand New amd easy to oder
"Best price and very easy to order."View article
RichChampagne
5/5
Great deal.
"Great product. Great price. Quickie order.
5.1-Ch 750W JBL Bar 500MK2 Dolby Atmos Soundbar System
$339
$650
47% off
+ Free S&H
at Greentoe"View article
careylively
5/5
Saving $$$
"I found the high-end appliance for 15% less than any other seller. "View article
Reviewer1947189363
5/5
Like ebay but better!
"Lots of retailers are willing to look at offers and give you the best prices!"View article
Reviewer1655329426
5/5
Easy!
"Great price and easy to use. Will definitely buy from again. "View article
Reviewer1847861951
5/5
OMG Green toe rocks
"I did not have the money to buy this TV at the retail price of $2700. Thank you for offering this service. Now i can watch TV after 6 months. My current TV burned out 6 months ago"View article
Reviewer1805362180
5/5
Shoot, why didnt I know about this sooner
"So I bought a tv for 40% off. Crazy."View article
kdog3395208437
5/5
quick flick
"quick, great price, no hassle"View article
Reviewer2177918132
5/5
Great experience
"Very fast process start to finish.
Great warranty options."View article
bonniemorton33gmail.com
5/5
Fast and fun buying a new range just in time for the holidays!
"Loved how simple this site was for buying new appliances! Best prices and no hassle!"View article
Reviewer2331278360
5/5
Easy Peasy
"It took less than 5 minutes to find the product, create account, and make the payment. Easiest purchase ever and i saved $500!"View article
Reviewer1265461541
5/5
Wow
"Lowest prices on the internet."View article
Alec-LG
5/5
EZ Savings
"Friend recommended me this site, never thought savings could come in such an easy experience!"View article
Reviewer3863939974
5/5
Leary at first, but...
"I had not used or heard about Greentoe. I checked their reputation online before ordering an expensive Christmas gift. I saved 34% from best in-person price at retailers. The item arrived when and as described. Happy customer. Will use again."View article
wsawalhahgmail.com
5/5
GE Cafe
"Great price always. This is my second purchase for my home appliances. "View article
KarenP193703804
5/5
Very pleased
"Easy to manuever & quick customer service response"View article
Specifications
Packaging Info
| Package Weight | 0.85 lb |
|---|---|
| Box Dimensions (LxWxH) | 9.1 x 7.2 x 4.0" |
General Information
| Impedance | 18 Ohms |
|---|---|
| Transducer Principle | Dynamic |
| Sound Pressure Level | 113 dB (Passive: 1 kHz/ 1 V RMS) |
| Total Harmonic Distortion (THD) | <0.5% (1 kHz/100 dB) |
| Pick-up Pattern | Dual omnidirectional microphones |
| Ambient Noise Compensation | N/A |
| Codec | aptX |
| Input Power | 3.7 VDC, 600 mAh: Built-in rechargeable lithium-polymer battery 5 VDC, 400 mA: USB charging |
| Ear Coupling | Closed, circumaural |
| Charging Time | Approximately 2 hours |
| Battery | Lithium polymer |
| Connectivity | Bluetooth 4.0/NFC pairing |
| Connector Cable | 4.6' (1.4 m) gold-plated audio cable with 1/8" (3.5 mm) angled plug |
| USB | Charging port |
| Dimensions | Not specified by manufacturer |
| Weight | 7.9 oz (225 g) |
| Operating Time | 25 hours |
| Frequency Response | 18 Hz to 22 kHz Microphone: 100 Hz to 10 kHz |
Product Highlights
- Bluetooth 4.0 and NFC Pairing
- Intuitive Earcup-Mounted Controls
- Dual Omnidirectional Microphones
- Foldable Design for Travel and Storage
- Built-In Rechargeable Battery
In The Box
- Sennheiser HD 4.40 BT Wireless Bluetooth Headphones
- Carry Case
- Audio Cable with 2.5mm and 3.5mm Jack Plug
- USB Charging Cable with Micro-USB Connector
- Limited 2-Year Warranty