1. Stable Connection: Equipped with the latest Bluetooth-Compatible 5.1 chip, these earphones provide high-speed and stable mission with strong anti-interference capabilities. The intelligent touch control operation makes them easy to use.2. Dynamic Speaker: Enjoy stereo sound and deep bass effects with the dynamic speaker, delivering an exceptional listening experience. The ergonomic in-ear design ensures comfortable wear, while the large-capacity battery provides extended usage.3. 1200mAh Charging Case: The wireless earphones come with a 1200mAh charging case, providing up to 48 hours of playtime for your convenience.4. Noise Reduction: These Bluetooth-Compatible earphones ensure you never miss any part or component of your music. With noise cancellation technology, the sound is incredibly clear without any interference or background noise.5. Universally Compatible: These earphones are universally compatible with all Bluetooth-Compatible devices, including smartphones, tablets, laptops, and more.Model: M22Bluetooth-Compatible version: V5.1Support protocol: AZDP/HFP/HSP/AVRCPCommunication distance: 10 metersHeadphone usage time: approximately 4.5 hoursCharging box battery capacity: 1200mAhEarphone battery: 50mAhInterface: Type-CFunctions: Waterproof, noise reduction, microphone, music playback/pause, answer/end calls, reject calls, up and down song switching, dual ear high-definition calls.Waterproof: Waterproof for daily use (sweat proof, rain proof, splash proof. Not suitable for diving, showering, etc.)Connection method: single/double useColour:As ShownMaterial:plasticPackage Contents:2 * earphones1 * earphone box1 * USB charging cable2 * ear capsOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture