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Original New tws i9s Bluetooth Button open switch in ear earphone wireless headsets with mic for IPhone android 1. Chip: Jerry Wind (V4.2) 2. Effective distance: 10m 3. horn: composite film, aluminum ring, 0.3-0.5 MW, frequency range 100 Hz-10 kHz 4. Battery: pure cobalt battery, 55 mAh headset charging box 400 mAh 5. playing time: 2-3 hours for one ear, 1.5-2 hours for ear 6. Standby time: 40 hours in one ear and 30 hours in ears. 7. Charging time: 1 hour for headphones, 2 hours for charging the box 8. color; White 10. One parcel size 10 * 10 * 3.5 cm one weight 120 g Package included: 2 x mini bluetooth headphones (left and right earbuds) 1 x USB charging cable 1 x user manual 1 x load box i7s earphone!!! 1st driver: 15mm 2. Impedance: 32 OHM 3. Bluetooth version: Bluetooth v4.1 + EDR 4. Bluetooth use frequency band: 2.4ghz 5. Power Level: CLASS II 6. Output power: 30 mw 7. Bluetooth distance: 15 meters barrier-free 8. Frequency response: 20-20000 hz 9. Operating voltage range: 3.0v-4.2v 10. Microphone sensitivity: -42dB 11. With A2DP / AVRCP high quality stereo audio transmission and remote control protocol 12. Powerful noise cancellation circuit (active noise reduction) 13. Switch between Chinese and English (Do not connect to Bluetooth status when booting, double-press the switch 2 times, and hear the immediate sound switch successfully) 14. Charging time is over 1 hour (power indicator charging: red light is on, full charge: red light is off (blue light is on).) 15. Product size: diameter is 25mm. 15mm wide. 35mm high 16. The net weight of the product is about 6g 17. The speaking time is about 2-3 hours. 18 music time is about 2-3 hours 19. Standby time is over 96 hours 20. Loading time is over 60 minutes 21. Battery capacity 55 mah 22. Charging power supply: DC5V power adapter [round hole interface] (computer USB port, mobile phone charger, car charger) Complete weight: 60g Packaging size: 9.5 * 3.5 * 13 cm Product color: black, white, gold, rose gold, red Standard: Earphone + Charging Cable + Manual (Chinese and English Double Sided) + box Properties: 1. listening to songs and making calls, listening to songs and talking on the phone; 2. Caller number, fully intelligent English sound fast, power on, pairing, power off, low power, etc. 3. ios power display, it is a power indicator after the Apple phone is connected to the headset, you can watch the battery status at any time; 4. One for two connections, the headset can connect two phones at the same time; 5.When the Bluetooth headset is connected to the phone and turned off, the Bluetooth headset will automatically connect to the phone when it is turned on, which is convenient and faster; 6. Smart compatibility: Support all phones, tablets and notebooks with Bluetooth function. Compatible with more than 100% of APP, player, TV, chat, etc .; Bluetooth version: V4.2 EDR Play time: 4-5 H Standby time: 120 H Battery capacity: 65 mah * 2 Complete weight: 148g Standard accessories: headphone, charging tray, charging cable, manual, box