Original Lenovo X18 IPX4 Waterproof Bluetooth 5.0 Touch Wireless Bluetooth Headphones with Charging Box, Support Call and Siri 

1. Bluetooth 5.0, no connection
2. Can transmit high quality music with low distortion and improve the listening experience
3. IPX4 waterproof, no fear of sweating during daily exercise
4. Can be used with a headset or two headsets together
5. Open the box and take out the headset. The connection will be made automatically
6. Smart touch control, easy to use
7. Just wake up the voice assistant to make your life smarter
8. The portable charging case not only allows you to charge the headset whenever you go out, but also as a storage box for the headset
9. Lighter than 4 grams, ergonomically designed to fit

your ears seamlessly and without pain for a long time Product Specifications:
1. Headphone box size: 595 x 403 mm
2. Bluetooth version: 5.0
3. Bluetooth distance: smaller or less equal to 20 m
4. Microphone: -42 dB
5. LED light color: red and blue
6. Call duration: approx. 5-7 hours
7. Capacity of the battery of a single headphone: 3.7 V, 60 mAh
8. Charging capacity of the charging case : 2600 mAh
9. Frequency range: 20Hz-20KHz
10. Charging time: less than or equal to 2 hours