Features 1. Strength to Build Good Sound Quality: A 10.00mm carbon element diaphragm dynamic coil with a built-in full frequency sound unit. Customized dynamic speakers have a more powerful and layered sound quality, with deep bass hitting the heart, and clear and transparent mid to high pitches surrounding the ear. The better the sound, the more durable it is to listen to. 2. Button based experience: Specially designed for sports enthusiasts, it effectively prevents risks such as accidental touch, sweating and falling off during exercise, firmly adheres to your ears, and brings you an efficient and convenient life. 3. Lightweight and pressure free: Single ear lightweight up to 8.3g, lightweight and pressure free, with the lightest button operation in the same series. Adopting artificial design, it fits different ears and provides a comfortable and seamless wearing experience. 4. Long battery life: The earphones can listen to music for 8 hours when fully charged, and the charging case can provide multiple charges for the earphones, up to 40 hours. The music is more beautiful and exercise is easier. 5. Large capacity charging compartment: The super convenient Type-C charging interface is compatible with most computers and mobile phone charging cables, so you no longer have to worry about not being able to find a charging cable. Specification Bluetooth version: BT5.3 Voice function: English prompt Charging interface: TYPE-C Charging case battery capacity: 650mAh Hall function: supported Horn unit: 10mm Transmission distance: 22M Operation type: button type Machine accessories: 1 charging cable, ear cap Waterproof grade: IPX5 Product size: 8.3 x 6 x 3.4 cm Audio encoding and decoding formats: AAC, SBC Bluetooth chip: Jerry AD6973D4 Material: ABS Color: Black Weight: 155 g Package Include: 1x Bluetooth headset