Feature: 1. IPX4 Waterproof: The waterrproof design and three models of earbuds will meet your higher demands for closure and sturdiness, even when running, punching, and listening to music on the go. 2. A New Generation of Bluetooth 5.0: The earphone is equipped with smart Bluetooth 5.0 chip. The data transfer rate is faster, and the connection is faster and more stable. Listening to songs and playing games are smoother. 3.Clear Stero Sound: 7.2mm dynamic unit and DSP intelligent environment noise reduction design will provide you with HD sound quality. 4. 4.1g Light Weight: Single earphone’s weight is just about 4.1g, which is very portable. 5. Long Battery Life: The earphone can be used up for 4 hours and 12 hours with charging bin.? 6. Multi-functional Button: One button can realize multiple functions such as palying music, call, etc. 7. Suitable for Sports Using: It is suitable for sports people to wear with ear-hanging design. It is comfortable in sports and anti-skidding. 8. Ergonomic Design: With high-quality material and ergonomic design, the earbud is comfortable and durable. Even if you wear for a long time you can also enjoy comfort. Specification: Item Type: Waterproof Sports Bluetooth Headset Brand: Xiaomi Bluetooth Distance: 10 meters Bluetooth mode: headset Bluetooth Protocol: A2DP, AVRCP, HFP, HSP Bluetooth Version: 5.0 Battery Type: built-in Functions: answering phone, Bluetooth, microphone, multi-connection function, noise reduction, sweat prevention, voice control, waterproof Material: Metal, PC, Silica Gel Type: In-ear Application: Running, Exercise Compatibility: iPhone, iPod, mobile phone Connectivity: Wireless Bluetooth Frequency Response: 20-20000Hz Impedance: 16 ohms Sensitivity: 93dB±3dB Headphone Charging Time: 1.5 Hours Charging Time Of Charging Box: about 2 hours Dual headphones continuous listening time: about 4 hours Headphone Standby Time: about 150 hours Single Headphone Battery Capacity: 40mAh Charging Box Battery Capacity: 300 mAh Net Weight Of Single Headset: about 4.1g Note: 1. Please allow light differences due to manual measurement. 2. Please allow slight color differences due to different light and screen. Package Included: 1 x Charging Bin 1 x Pair of Eartips (L) 1 x Pair of Eartips (S) 1 x Pair of Earbuds 1 x User Manual