Product information:
Bluetooth version: Bluetooth 5.0Transmit power: 8dBm+/-2dbmWorking frequency band: 2.4G ISM band (2.402-2.480GHZ)Charging voltage: 5VWorking voltage: 3.7VBattery specifications: polymer lithium battery (45mAh with protective plate)Support protocol: A2DP1.3/HFP1.7/HSP1.2/AVRCP 1.6/EDR/AACHeadphone weight: about 5.0gSpeaker parameters:Ohm: DCR: 32Ω ± 15% ACR: 32Ω ± 15% ohmSensitivity: 99dB±3(at 1.0KHZ) 1mWFrequency range: 20Hz to 20KHzRated output power: 2mWMaximum output power: 5mWSpeaker outer diameter: Ф10*2.5mm