GZCRDZ ZW-19 Wireless Headphone

Specifications: Model Number: ZW-19 Bluetooth version: 4.2+EDR Operation Distance: 10m RF Frequency Range: 2.402-2.480GHZ, 2.4G ISM band Frequency Response Range: 20Hz-20 KHz Receiver sensitivity: -84dBm Transmission power: 4dBm (max) Speaker Unit: 40mm, 10mW THD: ≤0.1% Battery: 360mAh Rechargeable Polymer Lithium Battery Working Time: about 2 hours with LED light on Standby Time: 450 hours Charge Time: ≤2.5 hours Charge Port: Micro USB Plug Type: 3.5mm Audio Port Color: Black Earmuff Diameter: approx. 7.3 cm / 2.87 in Main item size: approx. 19.7 * 17.5 * 7.5 cm / 7.75 * 6.88 * 2.95 in Item weight: approx. 191 g / 6.73 oz Package size: approx. 22.2 * 20 * 8.7 cm / 8.74 * 7.87 * 3.42 in Package weight: approx. 328 g / 11.57 oz Package List: 1 * Headset 1 * USB Cable 1 * Audio Cable 1 * User Manual (English & Chinese)