Style:In-Ear Communication:ctors:3.5mm Use:Mobile Function:MicroNoise Canng,Bluetooth Product name:Open-ear Bone Conduction Head Colors:Black, pink, gold Type:one on:V4.1 Playing time:10-15 hours Charging voltage:MICRO USB 5V Working current:10-20mA Working range:10M Output power:2x18mW Frequency range:2.401-2.480GHz