Specifications: IPX7 waterproof level makes it not afraid of sweat and splash water. Earphones adopts Bluetooth 5.0 chip, which is featured faster and more stable transmission and low power consumption. The ergonomic earphones are comfortable to wear, and your ears won't feel tired even for long time wearing. It supports automatic pairing with your phone when you take it out from the charging box again. Item Name: Wireless Earphones Material: Plastic Bluetooth Version: 5.0 Working Voltage: 3.2V - 3.4V Single Earphone Battery Capacity: 50mAh (Included) Charging Box Capacity: 450mAh (Included) Waterproof Level: IPX7 Transmit Distance: >10m Talk Time: 4-5 Hours Music Time: 4-5 Hours Earphone Charging Time: about 1.5 Hour Support System: for Phone/Device with Bluetooth Features: Wireless, Bluetooth 5.0, Pressure-free, Digital Display Charging Box Size: 16.5cm x 10cm x 5.2cm/6.49" x 3.93" x 2.04" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Charging Box 1 Pair of Wireless Earphones 1 x Charging Cable