i7s Tws Bluetooth Wireless Headphones Mini Stereo Bass Earphone Earbuds Sport Headset with Charging Box for iPhone xiaomi Phone

Note: This product does not have a retail package box! ! !
Features:

• 1. listening to the song correct, support songs and call,
• 2. remind call number, the last call back, all intelligent Chinese and English voice prompts, boot, pair, shut down the phone power will be low voice prompts;
• 3. Power capacity will show on your Iphone, you can see the power situation anytime, do not worry about the electricity ,make your life without worry;
• 4. One to two connections, can be connected to two mobile phones at the same time
• 5. Bluetooth headset connected to the phone after the shutdown  , and then open the Bluetooth headset will connect back to the phone  automatically  , more convenient;
• 6. Intelligent compatibility: support all Bluetooth mobile phone, tablet, notebook, singing it, QQ music, movies, etc., universal all mobile phone

• 2. Impedance: 32 OHM
• 3. Bluetooth version: Bluetooth v4.2 + 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. Powerful noise de-noising circuit (active noise reduction)
• 13. switch between Chinese and English (boot does not connect Bluetooth state, press the switch 2 times, hear the tone switch successfully)
• 13. Talk time is about 2-3 hours
• 14. music time about 1.5-2 hours
• 15. Standby time is about 100 hours

• 1 x Charging box
• 1 x USB Charging Cable