This Truly Wireless Mini Bluetooth Earbuds allows you to enjoy true wireless music streaming and hands-free call. The portable charging box will automatically charge the earbuds the moment you place them in the box. It can also be used as a storage box, ensuring you never lose your earbuds. Truly Wireless Design No wires between the two earpieces, free you from wires. Portable & Exquisite Charging Box Allows to charge the earbuds during storage, quite convenient and practical. Ergonomic Design Designed to fit perfectly for your ears and provides long time comfortable wearing. Smart Noise Reduction Provides you with fabulous audio enjoyment. Mini Size & Lightweight Design Easy for storage and carrying with you. Strong Compatibility Fully compatible with phone, computer, tablet, laptop, MP3, etc. Specifications Chip AT2823 Bluetooth Version V4.2 Transmit Distance 10-12m Battery Capacity 50MAH Music Playing Hours 2.5hours Charging Hours About 30 Minutes Working Voltage 3.7V Standby Time ≥80Hours Charging Box Battery Capacity 450MAH Earphone Size 26 x 17 x 20.8mm Charging Box Size 79.9 x 50.8 x 31.4mm Color Black/White Package Contents2 x Mini Bluetooth Earphones 1 x Charging Box 1 x Charging Cable 4 x Earmuff 1 x User Manual