Features: 350mAh high-capacity magnetic charging compartment, long service life. Graphene diaphragm, pure and shocking sound quality, bring you a different stereo experience. Compact body, comfortable and lightweight, so that your ears can wear comfortably for a long time without pain. IPX5 waterproof grade, can effectively protect the headphones from damage, not afraid of sweat and wind and rain. Touch adjustment, invisible in-ear ergonomic design ensures the headset stays stable in the ear, suitable for driving, sports, business and leisure. Upgraded Bluetooth 5.2 chip, compatible with a variety of Bluetooth products, stable wireless connection, lower power consumption, more pleasant to talk and listen to songs. Specification: Product name: Bluetooth headset Bluetooth version: 5.2 Bluetooth distance: 10 meters Three-way call: support Charging time: 2 hours Headset battery: 45mAh Charging case battery: 350mAh Talking time: about 4-5 hours Frequency range: 20HZ-20KHZ Headset size: 2.18*1.68*1.3cm Charging case size: 4.9.*3.8*2.5cm Product color: black/white/skin color Package List: 1*bluetooth headset 1*type-c data cable 1*User manual Attention: 1. Due to manual measurements and slight color variations, please allow 1-2cm difference for different display settings. 2. The color of the item may be slightly different from the picture due to light and screen differences. Please understand.