ASHATA Bluetooth Smart Wireless Sunglasses - Removable Polarized Stereo Hands-Free Headphones

How to use: bt A. Power on/off. 1 Turn on: Press and hold the BT button for 3 seconds, you will hear a sound of "Dumpt" and the BT indicator will flash red, indicating BT is on 2 Off: In the BT standby state, press and hold the BT button for 3 seconds, you will hear a sound of "Discharge" and the BT indicator light will turn off, BT will turn off B. BT Pairing In the BT off state, press and hold the BT button (about 3 seconds) and release it after hearing a beep. At this time, the BT indicator lights up and continues to flash quickly. Here BT is in pairing state and then use mobile phone to perform BT search Specification: Memory Size: 128M-32GB Playback format: MP3, WMA, ASF, WAV USB Interface: Standard USB 2.0 Headphone power: 20Hz-20KHz Signal-to-noise ratio: 90dB Distortion rate: 0.1% Battery voltage: 3.7V Battery type: Lithium battery: 180 mAh (delivered with built-in battery) Music Format: MP3/WAV/WMA Hardware: for IBM PC/AT or compact PCak laptop and computer with USB port Operational: for Windows 98/SE/ME/2000/XP Package List: 1 x Wireless Glasses 1 x USB Cable 1 x User Manual 1 x Dust cloth 1 x Storage Box