Product parameters: Bluetooth version: version 5.0 Effective distance: ≈10m Headphone material: ABS+PC Headphone battery: 450mAh Charging time: 1-2h The broadcast time: 10 h | material Selling point: 1. The size of the product is less than half that of ordinary mobile phones, which can be carried around, fitted with a non-feeling design, comfortable to wear, and not easy to fall off even for exercise 2. The product adopts 450mAh lithium battery, which can listen to music for more than 10h and talk for more than 12h. It only takes 1-2h to be fully charged 3. The product adopts Bluetooth version 5.0, with faster transmission speed, lower power consumption, no delay, strong anti-jamming ability and stable signal 4. Built-in intelligent adjustment system, the medium and high pitch is not divided into clear and clean, so that you have a comfortable auditory experience 5. The product adopts intelligent call noise reduction technology, with high stability microphone, clear communication, smooth and not stuck 1. The size of the product is less than half that of ordinary mobile phones, which can be carried around, fitted with a non-feeling design, comfortable to wear, and not easy to fall off even for exercise 2. The product adopts 450mAh lithium battery, which can listen to music for more than 10h and talk for more than 12h. It only takes 1-2h to be fully charged 3. The product adopts Bluetooth version 5.0, with faster transmission speed, lower power consumption, no delay, strong anti-jamming ability and stable signal 4. Built-in intelligent adjustment system, the medium and high pitch is not divided into clear and clean, so that you have a comfortable auditory experience 5. The product adopts intelligent call noise reduction technology, with high stability microphone, clear communication, smooth and not stuck