Digital Display Invisible Mini Leisure Stereo Binaural Bluetooth Earphones With Charging Compartment(Black) Tag-Wireless Remote Controller Speaker material: 40 cm black

Speaker material: 40 cm black magnetic speaker

using anodizing technology

A comfortable grip and two needles of different sizes are provided for efficient work

durable and good load bearing

Digital Display Invisible Mini Leisure Stereo Binaural Bluetooth Earphones With Charging Compartment(Black) Tag-Wireless Remote Controller Speaker material: 40 cm black1. Bluetooth version: V5. 3 2. Bluetooth chip: Jerry 6983D2 3. Bluetooth distance: about 10M 4. Battery capacity: charging compartment: 300mAh; headset: 30mAh 5. Speaker: LD F10 real copper ring 6. Listening and talking time: about 4h 7. Charging time: about 1h 8. Standby time: about 150 days 9. Frequency: 20Hz 20KHz 10. Impedance: 32 ohm 11. Sensitivity: 115dB mW 12. Waterproof grade: life waterproof 13. Accessories: earphones x 2, charging