精品无码人妻一区二区三区不卡-欧美人与物videos另类-欧美性猛交xxxx乱大交蜜桃-亚洲中文字幕无码爆乳-丁香狠狠色婷婷久久综合

Bluetooth version: V5.0&built in microphone
Driver unit: Φ40mm
Impedance: 32Ω
Receiver distance: Up to 10 meters
Frequency response: 20Hz-20kHz
Battery voltage: 3.7v 400mAh
Charging time: about 2 hours
Music time: Up to 10-12 hours
Talk time: Up to 10-12 hours