Bluetooth standard: Bluetooth V5.1 

Support protocol: HFPV1.5, A2DPV1.2, AVRCPV1.4, GAVDP v1.2, AVDTP v1.2, SPP v1.2, AVCTP v1.3

Transmission distance: 20 meters

Working frequency: 2.402-2.480GHz

Charging voltage: DC5V

Charging time: 3 hours

Impedance: 32Ω at 1kHz

Speaker specifications: 14.2mm-06μ steel magnetic horn

Sensitivity: 100dB±3dB/mW

Lifetime: 30 hours

Frequency range: 20Hz-20,000Hz

Wire material: environmental protection TPE flat wire

Support Hi-Res audio + Siri voice control + magnetic

Battery capacity: 3.7V/400mAh (with protection)