Question 1

Whats the difference between these and the QC 20i's? It says these are newer but doesn't show any changes from the previous model

Accepted Answer

I had recently written to Bose asking what the difference was between these QC 20i's and the prior model. This was their response:Thank you for contacting us about the QuietComfort 20i headphones.I can help you with these questions.1. As a research based company, Bose is constantly working on improving our products. These including better audio quality and noise cancellation, and more robust cables.The "original" QuietComfort 20i headphones are black and white. The new version of the QC20i is available in two different colors; black with a blue stripe or white with a blue stripe.2. For special pricing, available only through the Educators Direct Group, please call (800) 643-2673 (US only).  This group is open from 7:00 AM to Midnight EST, seven days a week.   Our specialists will be happy to assist you since these quotes can't be generated via email.Contact me with any questions regarding this matter.Thank you for contacting Bose Corporation.FrankCustomer Support Team----------------------------------------------------Bose CorporationUS Telephone: (800) 444-2673   International Tel: (508)766-1099     Telephone Hours: Mon-Fri 9:00am-9:00pm, Sat 9:00am-7:00pm (EST)----------------------------------------------------

Question 2

Do these make that stethoscope sound when you hit the wires?  I know the over ear ones don't.

Accepted Answer

They do. Not as much as some other in-ears I have tried, but for example more than the Bose SoundSport in ears that I have. I still prefer them to the over ear QC15/25 because they are so compact and I can sleep with them in a plane. The over ear ones will transmit sound if you lean on them when trying to sleep in a plane. I find the "stethoscope sound" to not be an issue in everyday use.

Question 3

Do they work even when the battery is depleted?

Accepted Answer

Hi there,The QuietComfort 20 headset does work when the battery is depleted.  Thanks for the question!

Question 4

If I take this product on an international trip, can it be charged (using an appropriate adapter) with a 240 volt outlet?

Accepted Answer

You can charge these headphones using any standard USB charger regardless of the voltage, they are compatible with outlets 100-240 V.

ASIN	B00X9KV0HU
Age Range (Description)	Adult
Audio Driver Type	Dynamic Driver
Batteries	1 Lithium Polymer batteries required. (included)
Battery Life	16 Hours
Best Sellers Rank	#51,301 in Electronics ( See Top 100 in Electronics ) #2,629 in Earbud & In-Ear Headphones
Cable Feature	Retractable
Charging Time	2 Hour
Compatible Devices	iPhone, iPad and iPod models
Connectivity Technology	Apple devices
Control Method	Touch
Control Type	Call Control
Customer Package Type	Standard Packaging
Customer Reviews	4.3 4.3 out of 5 stars (2,584)
Date First Available	July 20, 2015
Earpiece Shape	Rounded Tip
Generation	20
Hardware Interface	Bluetooth, USB
Headphones Jack	3.5 mm Jack
Included Components	QuietComfort 20 headphones, Apple devices, 3 pairs StayHear tips (S, M, L), clothing clip, rechargeable lithium-ion battery (built-in), USB charging cable, carrying case
Input Device Interface	Audio jack
Is Discontinued By Manufacturer	No
Item Weight	1.55 ounces
Item model number	718839-0010
Manufacturer	Bose
Material	Plastic
Model Name	QuietComfort 20
Noise Control	Active Noise Cancellation
Noise Control Features	Active Noise Cancellation
Number of Items	1
Product Dimensions	5 x 2.38 x 7.8 inches
Recommended Uses For Product	Calling
Series Number	7188390010
Special Feature	Microphone Included, Noise Cancellation
Style	Apple devices
Supports Bluetooth Technology	Yes
UPC	017817658515
Units	1.0 Count
Wireless Communication Technology	Wired

Bose QuietComfort 20 Acoustic Noise Cancelling Headphones, Apple Devices (Black)

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