B2 Bluetooth-compatible TWS Headset Low Delay In-ear Headphone Wireless Waterproof Earphone with Charging Case

• The Bluetooth-compatible 5.2 connectivity, more stable and faster, easy pairing with your phone
• With smart touch control, you can easily cut songs and listen to calls through a few taps
• With the 200mAh charging bin, you can charge the headphones on the go, providing long standby time
• The earphones are light in weight, with no pain feeling for long-term wearing 
• Waterproof design, no fear of sweat, great for running, hiking, cycling, car driving, business occasion, etc, enjoy superb sound quality instantly

Specifications:

• Bluetooth-compatible chip: QCC3040/BT5.2
• Audio decoding: SBC, AAC, aptX, aptX Adaptive
• Effective distance: >10m
• Earphone battery capacity: 30mAh*2
• Frequency range 2.402~2.480GHz
• Speaker: 6mm (composite diaphragm)
• Sensitivity: 101±3dB
• Rated impedance: 15Ω±(15%)Ω at 1KHz
• Charging case battery capacity: 200mAh