i7s Tws Headphones Bluetooth 5.0 Earphones Wireless Headsets Stereo Bass Earbuds In-ear Sport Waterproof Headphone Free Shipping

Specification Shipping Limitations:Unlimited Available Ship to:United States Details  Note: This product does not have a retail package box !!! Characteristics: 1. hear the song correct; support songs and call; 2. remember phone number; the last call back; all intelligent Chinese and English voice calls; boat; couple; shut down the phone power will be low voice calls; 3. Power capacity will show on your Iphone; you can see the power situation at any time; no worry about the electricity; make your life worry free; 4. One to two connections; can be connected to two cell phones at the same time 5. bluetooth headset connected to the cellphone after shutdown; and then open the bluetooth headset will connect back to the phone automatically; more convenient; 6. Smart compatibility: support all bluetooth cellphone; tablet; notebook; sing it; QQ music; movies; etc.; universal all cellphone   Specification: 1st driver: 15mm 2. impedance: 32 OHM 3.Bluetooth version: Bluetooth v5.0 + EDR 4. Use Bluetooth band: 2.4 GHz 5. Power level: CLASS II 6. Output power: 30 mW 7. Bluetooth distance: 10 meter 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.Powerful noise de-noising circuit (active noise reduction) 13. Switch between Chinese and English (boat does not connect Bluetooth state; press the switch 2 times; the sound hear switch successfully) 14. Talking time is about 2-3 hours 15. Music time over 1.5-2 hours 16. Standby time is over 100 hours   Package contains: 2 x i7s tws bluetooth headphones (left and right earphones) 1 x charging box 1 x USB charging cable 1 x user manual window.adminAccountId=239234800;