New in Box - KOTION EACH Bluetooth Wireless Gaming Headphone B3506 V4.1 Bluetooth with Improved Sound Quality and Better Equalization
The Bluetooth:
This KOTION EACH B3506 Bluetooth wireless headphone is equipped with Bluetooth
4.1 Version Chipset with up to 33 Feet of Range without obstacles. Hands Free
headset, receive and make calls with built in Microphone function. Listen to your
favorite music wirelessly.

Easy Access Controller for Your Freedom:
LED indicator light, Bluetooth headphones with mic, Volume+/-(Previous track/next
track), Play/Pause/Answer/Hang up calls with one button.

Please note:
Its included audio cable is equipped with a Play/Pause/Answer/Hang up calls button and
a IP(international standard)/NK(national standard) switch. Connecting the
audio cable with your headset, if your headphone appears unclear sound, only one
side with sound or the microphone doesn't work, which means that it doesn't
support your device, you should switch the IP/NK key.

Specifications:
Bluetooth version: 4.1
Product type: Dynamic headphone
Speaker diameter: 40mm
Microphone unit: 4 * 1.5mm
Speaker impedance: 32ohm
S.P.L.: 106Db S.P.L. at 1KHz
Frequency response: 20HZ-20,000HZ
Battery capacity: 400mAh
Battery type: Lithium battery
Charging time: 3hours
Talk/music time: Above 8hours
Standby time: 180hours
Transmission distance: 10m/33ft without obstacles
Operating voltage: 3.7V
Charging voltage: Below DC4.7V-6V
Line-in cable length: Approx. 1.2m / 3.28ft
Unfold headphone size: 19 * 19.5 * 7.5cm / 7.5 * 7.7 * 3.0in
Headphone weight: 252g / 8.88oz
Package size: 14 * 8.8 * 18cm / 5.5 * 3.5 * 7.1in
Package weight: 428g / 15.11oz

Package content:
1 * B3506 Bluetooth Headphones
1 * USB Charging Cable
1 * Multi Language User Manual
1 * Line-in Cable