Feature:1. Wireless bluetooth compatible: Wireless bluetooth compatible, V5.2 core chip, the transmission is more stable and fast, no delay. It fits for Android, IOS phones and tablet,laptop and other Bluetooth compatible devices.2. HD call and HIFI sound: Noise reduction technology, built-in dual microphones in the earbuds, stay away from interference, support HD call. 10MM speakers, rich sound details, it provides HIFI sound.3. Portable charging case: Equipped with a portable charging case, the earphones can be automatically charged when they are placed in the it. Charging case is built-in 400mAh battery, convenient to use.4. Automatic pairing: You connect the wireless earbuds to the phone, then shut it down. And open the wireless earphone again, it will connect back to the phone automatically , more convenient.5. LED power display: Charging case is designed with LED digital display, you can clearly see the power of the left and right earphones and the power of the charging case, to avoid the embarrassment of the earphones running out of power when in use.6. Lightweight and ergonomic: It is ergonomically designed, soft silicone ear cap, more comfortable to wear, does not fall. And it& 039;s waterproof, and sweat won& 039;t damage the components in daily sports.Specifications:Color: Black, white, pink, purpleMaterial: ABSWireless earbud power by: Built-in 2 x 40mAh batteryCharging case power by: Built-in 400mAh batteryBluetooth compatible version: 5.2Transmission range: About 10mSound channel: StereoSpeaker: 10MMImpedance: 16 ohmsListening time: About 3h-4hCharging case battery life: About 24hCharging time: About 1hCharging case input: DC5VCharging interface: Type-CEarbud size: About 2.3 x 2 x 1.5cm/0.91 x 0.79 x 0.59inch(L x W x H)Charging case size: About 6 x 6 x 3cm/2.36 x 2.36 x 1.18inch(L x W x H)Package Includes:1pairx Wireless earbud1pc x Charging case1pair x Replacement ear cap1pc x Charging cable1pc x ManualNote:1. Due to the light and screen difference, the item& 039;s color may be slightly different from the pictures.2. Please allow 0.5-2 cm differences due to manual measurement.