* Flexible Stereo neckband earphone * Large battery capacity: 400mAh * 13.5*1*43cm * Playback time: 30 hours * Standby time: 400 hours * Bluetooth ver: 5.0 * Magnetic earphone to prevent falling * Built-in mic * In-line remote control * Frequency range: 2-20kHz * Large double side branding area GU
