Product details：

Bluetooth solution: RL5003 Bluetooth version: V5.0 Support:A2DP,AVRCP,HFP Working frequency:2.402GHz-2.480GHz Sensitivity: < -85dBm Bluetooth range: 10meter Speaker power:3mW Rechargeable battery: Li 3.7V, 400mAh Music time: 3hours(80% power) Talk time: 3hours(80% power) Charging input criteria: DC5V-500mA MicroUSB Charging time: 1hour Battery life: ≥300times