Description:1. Waterproof ,antiperspirant2. Built-in microphone hands-free phone3. Bluetooth 5.0, 2 ear have voice when calling.4. High quality Bluetooth wireless stereo headset5. mini size,comfortable and lightweight in-ear design6. Open charging box Antomatic Boot-up Matching Function.7. you can play any audio files of paired bluetooth device.8. High definition,isolation and noise reduction, piston type9. The rechargeable house can be supplied to 2 earbuds for 4 cycle rechargeMore Info:1. Driver: 15mm2. Impedance: 32 ohms3. Bluetooth version: Bluetooth v5.0 + EDR, Jerry 5.0 solution4. Bluetooth use frequency band: 2.4GHz5. Power rating: CLASS II6. Output power: 30mW7. Bluetooth distance: 15~20 meters barrier-free8. Frequency response: 20-20000Hz9. Working voltage range: 3.0V-4.2V10. Microphone sensitivity: -42dB11. With A2DP / AVRCP high quality stereo audio transmission and remote control protocol12. Powerful noise cancellation circuit (active noise reduction)13. Charging time is about 1 hour (power indicator charging: red light, full power: red light is off (blue light is on).14. Product size: 53 × 44 × 21mm15. The net weight of the product is about 32 grams16. The game time is about 150-180 minutes.17. Standby time is about 48 hours18. Battery capacity 35MAH (charging box 350MAH)19. Charging power supply: DC5V power supply [lighting interface] (computer USB interface, mobile phone charger, car charger)Complete weight: 120 gramsPacking size: 10 * 10 * 6cmStandard: earphone + charging box + charging line + manual + boxfeature:1. Listen to songs and make phone calls, support listening to songs and making phone calls;2. Pick up automatic boot, binaural call, automatic pairing.