A37

CHAROME™ TWS True Wireless A37 Bluetooth Earbuds featuring True Wireless Stereo Sound/Dual Microphone/ANC/ENC – In Ear Headphones for iPhone / Android / Mac / PC

• Pairing name: A37
• Version: V5.4
• Communication distance: 10M
• Software support protocol: A2DP/AVRCP/HSP/HFP
•  Battery type: polymer lithium battery
• Headphone built-in battery: 30mAh*2
• Standby time: about 200 hours
• Call time(volume 80%): about 4 hours
• Listen to music (volume 80%): about 5 hours
• Charge time about 1.5 hours
• Built-in battery in the charging box:300mAh
• Battery input voltage: DC 3.7-4.2V
• Charging input voltage: DC 5V+/-0.25V
• Loudspeaker Size: 13mm
• Impedance:32±ohm
• Sensitivity:109±3dB
• Rated input power: 2mW
• Frequency response: 50Hz-20KHz