Product Parameters: BT Version: V5.0 Range: 10m Battery Playtime: 4 hrs on single charge; case provides additional 12 hrs Charge Input: Type-C Product Features: Bulit-in 13mm Drivers- Dynamic Sound oraimo Roll delivers rich and full sound with high-performance 13mm drivers. Specially tuned EQ by oraimo acoustic experts brings heart-beating music. Noise-reducing Microphones-Less Background Noise in Calls Both earphones are equipped with omni-directional MEMS microphones that effectively reduce backgrounds noise, making your voice heard clearly.