Product Introduction 1. Driver: 15mm 2. Impedance: 32 OHM 3. Bluetooth version: Bluetooth v5.0 + EDR 4. Bluetooth use band: 2.4GHz 5. Power level: CLASS II 6. Output power: 30mW 7. Bluetooth distance: 10 meters barrier 8. Frequency response: 20-20000Hz 9. Operating voltage range: 3.0V-4.2V 10. Mic sensitivity: -42dB 11. With A2DP / AVRCP high quality stereo audio transmission and remote control protocol 12. Talk time is about 4-5 hours 13. music time about 3-4 hours 14. Standby time is about 120 hours Product Parameter(specification) OEMCustom Logo FunctionEarphone with microphone MaterialsPlastic锛圓BS锛?/p> OriginChina (Mainland) ProvinceGuangdong Province CityDongguan Channel2 Bluetooth version5.0 Color classificationblack TypeWaterproof smart earphone Waterproof standardIPX5 Usage typein-ear Operation range10m StereoYes Intelligent typeintelligent voice assistant锛坰ir/xiaoai/xiaoyi锛?/p> Transmission radius10m Warranty12 months The connection between the left and right earphoneswireless connection The connection between earphone and playback deviceBluetooth connection Package Includes: 2 x mini Headphones 1 x Charging box 1 x USB Charging Cable 1 x User Manual Production details Our Services 1. We are Bluetooth Factory with own R &D and powerful technology for more than 10 years; 2. We have our production line; 3. We can offer best price with high quality . 4. Low MOQ QTY to support different sellers; 5. support OEM of logo and box 6. Enough Bluretooth Stock to keep fast lead time 7. Best service for customers to meet time table Testing equipment Standard packaging or customerised packaging style. FAQ 1. What Is Our Quality Warranty? Answers: The quality warranty is 12 months. When you found defective products, please collect pictures or video and send to us. Our quality department will check what is reason. If defectives in the quality warranty range, we will arrange replacements with next orders. 2. What Is Our Payment terms and Method? Answers: EXW, FOB SZ/HK. 1 ) 30% deposit after order confirmation, 70% balance payment before the delivery. 2) T/T,Paypal,ALIBABA Assurance TradeCustomized Wireless Earphone website:http://www.covivatech.com/wireless-earphone/