Bluetooth operating range: up to 10 m (free space)
Bluetooth transmission frequency: 2.4GHz to 2.48GHz
Bluetooth profiles: A2DP, AVRCP, HSP, HFP
Audio resolution: 24bit@48KHz
Drivers: Φ57mm
Impedance: 16Ω
Frequency response: 15Hz-25,000Hz
Sound Pressure Level (SPL): 116dB
Total Harmonic Distortion (THD): <0.1%
Standby time: about 1100 hours
Bluetooth music/talk time: about 20 hours
Charging time: 2 hours for full charge
Operating temperature range: -10℃ to 50℃ only
Charging voltage/current: 5V/500mA
Power Consumption: 137mW
Headphones dimensions: 175*84*200mm
Package dimensions: 207*240*75mm
Headphones weight: 312g
Package weight: 1153g

https://www.amazon.com/Bluedio-Vinyl-Wireless-Bluetooth-Headphone/dp/B01M8HWHED/ref=sr_1_1?s=aht&ie=UTF8&qid=1485284572&sr=1-1&keywords=Bluedio+VINYL+Bluetooth+4.1

In the box
Bluedio Vinyl headphones
3.5mm audio cable
Audio cable with smart remote and mic
USB charging cable
Y audio cable
Carry case with a buckle
Pouch for cables
User manual