GD28 IPX4 Waterproof Single-ear Lightweight Clip Ear Bluetooth Earphone(Black)

1. Bluetooth program: V5.32. Speaker: 13mm copper ring speaker (bass effect is obvious)3. Chip: BlueTrum4. Use time: about 5-6h5. Charging time: about 1h6. Communication distance: about 10-15m without obstacles7. Charging interface: USB8. Battery capacity: 50mAh9. Frequency: 20Hz-20KHz10. Impedance: 32 ohms11. Sensitivity: 85dB/mW12. Waterproof rating: IPX413. Weight: about 6.5gFeatures:1. External sound quality, safe travel, does not affect the communication2. Silicone tail, soft and comfortable, clip ear without pain3. One-button design, more convenient for music calls4. Ear buckle support, not into the ear design, skin-friendly material, comfortable to wear5. HIFI stereo surround sound, copper ring speaker, three frequency balance, micro-permeable holes, reduce noise6. With light design, beautiful and shiny7. Anti-leakage ear holes, painless to wear8. Simple design, smooth lines, lightweight and portable