Thanks to the Auto On/Off Technology, it takes only one step to set up the connection. Beebud is probably the smartest ever True Wireless Sports Earbuds in the market. Bluetooth V5.0 chipset, Taiwan Airoha, Lightweight: 8g, Dimensions of earbud: L25.6 x W15.4 x H14.4mm, Less than 10 meters(33feet) in working distance (open space), Bluetooth profiles: handsfree,A2DP/AVRCP, Support Noise Reduction (waterproof) with IPX4 and sweatproof, Truly simple to charge: Magnetic Charging Solution, Automatical smart magnetical turn on/off , Battery Type: Lithium polymer battery, Capacity: 55mAh + 55mAh, up to 4 hours music playback time, up to 4 hours of talk time, up to 100 hours standby time, Voice prompt in English and Chinese, Certificate: BQB, CE, Rohs, FCC. What´s in the box: 1 X Pair of Beebud True Wireless Fitness Earbuds, 1 X Power Pouch (500mAh), 2 X Removable earhooks, 2 X Earhooks Caps, 1 X Micro USB Cable for charging the power pouch, 1 X User manual. Colour: Black.