Feature: 1. HiFi MUSIC: Featuring a fully open ear design and excellent sound quality transmitted directly through bone conduction. The sound is clear, powerful in volume and rich in bass, with 360° HiFi stereo superior sound quality. 2. EAR PROTECTING: The open ear headphones will not enter your ears. Ultra lightweight and comfortable to wear for long periods of time, they won't fall off when exercising, providing a long lasting listening experience while protecting your ears. 3. WIRELESS BLUETOOTH: Supports touch control and wireless device connection, including cell phones and tablets. It is very convenient to open the charging compartment to connect automatically. 4. STRONG DURABILITY: The earbuds use Type C charging port, charging time is less than or equal to 30 minutes, and charging compartment is about 1.5 hours, able to play music continuously for 8 hours. Ultra low power consumption, ultra long battery life, ultra low latency, ENC call noise reduction. 5. LIFE WATERPROOF: With IPX7 waterproof technology, it can effectively prevent water, sweat and rain damage, perfect for daily life or sports, more reliable and convenient to use. Specification: Item Type: Earbuds Material: ABS Earbuds Built In Battery: 2x40mah Lithium Battery Charging Compartment Built In Battery: 300mah Lithium Battery Bluetooth Protocol: V5.4 Impedance: 20Ω Speaker Sensitivity: 102db ±3db Frequency: 2.4GHz Speaker: 16mm Transmission Distance: 10m / 32.8ft Standby Time: 120h Music Time: 8h. Package List: 2 x Earbud1 x Charging Compartment1 x Charging Cable1 x Instruction Manual