Specifications:

Brand: Bluedio

Model: BT5

Bluetooth version: 5.0

Transmission frequency: 2.4-2.48GHZ

Bluetooth range: up to 10 meters 

Bluetooth mode: A2DP, AVRCP, HSP, HFP

Frequency response: 20Hz-20KHZ

Audio resolution: 24bit@48kHz

Drive unit: Medium 57mm x 2

Impedance total harmonic distortion: (THD) 0.3%-3% (THD)

Sound pressure level: (SPL) 8db

Headphone battery: 300mAh polymer battery

Standby time: about 1000 hours

Bluetooth music/talk time: about 15-20 hours

Charging time: about 2 hours when fully charged

Operating temperature range: 10 degrees Celsius to 50 degrees Celsius

Input voltage/current: 5V/≥500mA

Power consumption: 30mw+30mw

Charging interface: USB Type-C

Features:

- 57mm big speaker drivers, take a powerful sound feeling. 

- Upgraded Bluetooth 5.0: Automatically paired and connected after power on, stable transmission is up to 10 meters

- Hands-free Calling & Built-in Microphone: With noise reduction microphone technology and the fast stable Bluetooth wireless transmission, you can make a clear wireless hand-free call easily 

- Long Battery Life: 15-20 hours of listening and talking time, 1000 hours of standby time

What's inside the box:

1 x Bluedio BT5 Over-head Bluetooth headphones

1 x Charging cable

1 x English and Chinese user manual