Standard: Bluetooth 5.1 + EDR + BR + BLE Output current: 2 x 5 W Bluetooth range: 10 m Impedance: 4 Ω Battery type: Li-ion 3.7 V 3600 mAh Working voltage: 5V Maximum volume: ≥ 95 dB Frequency response: 50 Hz – 18 kHz SD cards: Up to 32GB Frequency range: Bluetooth 2402 MHz – 2480 MHz Support: TWS Function ...