XO BS27 Wireless Neckband Sports Earphone, black
- Sound Channel System Dual Channel
- Control mode 3 physical buttons
- Bluetooth version: Bluetooth V5.0
- Support Bluetooth protocol: A2DP v1.3, AVRCP v1.6, HSP, HFP
- Receiving sensitivity: -85dBm
- Bluetooth effective distance: : 10M
- Headphone amplifier type: chip built-in
- Audio signal-to-noise ratio: S/N ?93dB
- Speaker unit: speaker 14MM true copper ring speaker 16ohm
- Microphone MIC MEMS, condenser microphone, -42dB+-2,
- Built-in battery: Lithium battery -3.7V, 170mAh + protection board
- Standby time: about 170 hours
- Music time: about 11 hours (80% volume)
- Talk time: about 9.5 hours (80% volume)
- Charging input standard: DC5V-60mA Micro USB
- Charging time: about 1.5-2H
- Battery cycle life: charge and discharge cycle ~300 times
- Function: Insert card TF card up to 64gb
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