Bluetooth version: ISSC3.0

Operation distance: 10m

Sensitivity: 105dB+ / - 3dB

Rechargeable lithium battery: 300mAh

Charge time: 2-3hrs

Charge port: USB

Resistance: 32ohm

Plug type: 3.5mm

Audio cable length: 1.2m / 3.94ft

Earmuff diameter: 8cm / 3.1in

Item weight: 152g / 5.4oz

Package size: 16.5 * 1