Specifications:
Bluetooth version: 4.1 +EDR
Bluetooth transmission frequency: 2.4GHz to 2.48GHz
Bluetooth operating range: up to 33 feet (free space)
Profiles: A2DP, AVRCP, HSP, HFP
Audio resolution: up to 24bit@48KHZ
Drivers: Φ57mm
Impedance: 16Ω
SPL: 116dB
Frequency response: 15Hz-25,000Hz
THD: <0.1%
Standby time: up to 1100 hours
Bluetooth music/talk time: about 20 hours
Micro SD card music time: about 18hours
Charging time: 2 hours for full charge
Operating temperature range: -10 ℃ to 50℃ only
Headphones dimensions: 159*126*78mm
Package dimensions: 251*170*95mm
Headphones weight: 388g
Package weight: 955g