Q1 Mini Single Ear With Charging Compartment Wireless Invisible Stereo Bluetooth Earphone 1. Mini size, easy to carry 2. Large-capacity battery, long-lasting battery life, longer service life 3. 5.4 low power consumption chip, continuous connection, no lag 4. Invisible wearing, ear comfort without burden 5. Contact design, a key to switch songsanswer calls 6. High-fidelity sound quality, deep and powerful bass, bright and clear mid-high frequency 7. Instant connection, support for dual-device use 8. IPX5 waterproof, can also be used in outdoor sports Parameters: 1. Bluetooth version: V5.4 2. Transmission range: 10 meters 3. Material: PC+ABS 4. Charging interface: Type-C 5. Charging time: about 50 minutes for the earphone; about 1.5 hours for the charging compartment 6. Earphone battery capacity: 25mAh; charging compartment battery capacity: 250mAh 7. Size: earphone 1.5 x 1.3 x 1.7cm; charging compartment 3 x 3 x 3cm