XO BS27 Wireless Neckband Sports Earphone, black

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