MKB S2 Pro ENC True Wireless Earphones Material ：ABS PC Version：V5.3 Communication distance ：10 miter Music time：about 4 hours (70%of the volume) Music time with a charging case：18-22hours Battery capacity ：30mAh/0.111Wh(earphones）300mAh/1.48Wh(charging case） Earphone rated input：DC5V—30 mA Charging case rated input ：DC5V—250 mA Charging time:about 1.5 hours Frequency response range ：20Hz-20kHz Charging interface ：Type-C Suitable for：Compatible with all wireless devices LED display / ENC / bluetooth version 5.3
