Gr03 Bluetooth-compatible Receiver Hands-free Call Audio Amplifier Wireless Converter For Headphones black

Description

Bluetooth-compatible 5.3 version 7706 master control; Bluetooth-compatible transmission distance 5m. Support Bluetooth-compatible hands-free call function. Support Bluetooth-compatible A2DP stereo. Support answering, hanging up, rejecting, calling back and other telephone functions. Support echo cancellation and noise suppression (CVC) technology during calls Lithium battery specification: 250mA/h; Charging time: about 2.5 hours; Frequency response: 20-20khz.