1. Stable Connection: Equipped with the latest Bluetooth-Compatible 5.1 chip, these earphones provide high-speed and stable transmission 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 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: M22 Bluetooth-Compatible version: V5.1 Support protocol: AZDP/HFP//AVRCP Communication distance: 10 meters Headphone usage time: approximately 4.5 hours Charging box battery capacity: 1200mAh Earphone battery: 50mAh Interface: Type-C Functions: 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 use Colour:As Shown Material:plastic Package Contents: 2 * earphones 1 * earphone box 1 * USB charging cable 2 * ear caps Only 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.