Features: Long Lasting Life: Intelligent fast-charging technology, a full charge lasts longer, talk time up to 48 hours, so your work life say goodbye to frequent charging. Intelligent Noise Cancellation: Effective suppression of external noise, in a noisy street can still be clear calls, so that wireless communication to perform. IPX5 Level Waterproof: Multi-process tight design for the headset to provide a full range of splash waterproof protection, even running fitness is not afraid of rain and sweat. Bluetooth-compatible 5.2 Chip: The connection is faster and more stable, and it consumes less power and has less latency. Comfortable to Wear: 180 rotatable design, free to switch between the left and right ear, soft rubber ear hook design to better fit the ear. Specification: Bluetooth-compatible Version: 5.2 Battery Capacity: 300mAh Charging Time: 2h Talking Time: 48h Listening Time: 36h Communication Distance: 15m Charging Parameters: DC5V-150MA Headset Weight: 13g