Bluetooth version: V5.1 is downward compatible with other Bluetooth modes

Bluetooth effective distance: ≥ 10 meters

Best Talking Distance (TBR): <20cm

Maximum power of earphone: 30mW

Audio signal-to-noise ratio S/N: ≥90dB

Frequency response: 60Hz～20KHz

Speaker unit: 13mm high-fidelity copper ring speaker

Built-in battery lithium battery: 3.7V, 25mAh

Music time: about 3.5 hours

Talk time: about 3 hours

Charger input standard: TypeC, DC5V, 500mA-1000mA

Charging time: about 1.5 hours

Charging cases battery: 240mAh

22h standby time  |   HiFi sound  |    IPX5 Waterproof