Bluetooth Headset In Ear High Power Super Long Standby Business Sports Features: 1. Wraparound mounting ear design: ergonomics, long-wearing, painless- skin-friendly + ergonomically designed ear bones for comfortable and long-lasting wear. 2. IPX5, so you no longer worry about rain and sweat, fearless-, more 3.Stable transmission: Bluetooth 5.1, signal stability, a new generation of low-power Bluetooth 5.1 chip signals are more stable and faster. 4.The 180° rotating earpiece is to wear a 180° rotating earpiece, which can be freely- converted to the left and right ears and the angle of adjustment is no longer restricted. 5.The hard-core Bluetooth 5.1 chip rejects the Karton delay built-in high-resolution decoder, allowing the signal to be more powerful and farther away, high-speed transmission, and playing games to watch movies with 0 delays. Product Description: Bluetooth: V5.1 Working distance: 10 meters rating: IPX5 Battery display: support (iOS and most Android phones) Batterij-indicator: Lithium Polymeer Batterij Headphone capacity: 300 mAh Music playback time: about 16 hours (music volume will affect time) Call time: 20 hours （Volume size affects time） Charging time: 1.5 hours Support mode: all Bluetooth versions Sound: HD voice quality Wearing method: wearing ear hanging Boot automatic matching: support package includes: 1 * Headphones 1 * Charging cable 2 * Ear cap 2 * Ear hook 1 * pair of headphones