Features: 1.Bluetooth version: V4.2+Edr 2.Working range: up to 33 feet on open air 3.Frequency: 2.4GHz 4.Playing time: 4-6 hours 5.Standby time: 100 hours 6.Charging time: about 1-2 hour 7.Reception level of sensitivity: -42Db 8.Working temperature: -10 - 55 C 9. Compatible with Apple iPhone 6/6S/7/7 Plus/8/x, iPad, notebook, Samsung Android, etc. Box content: 2 x tws Bluetooth stereo earphones 1 x charging case 1 x micro USB charge cable 1 x user Manual 1 year warranty: if there are any issues, we'll give you a total refund or a replacement, we just want your 100% satisfaction user tips: in stereo mode, when you use it as a pair, both earbuds can control the media (such as play/pause, recall and so on) from its own button. Please be informed that you can only hear the voice from one earbud when you are in a call in stereo mode. Twins pairing: 1. Long press the power button of the pair of earphones at the same time until the LED flash in Blue and Red alternately. 2. Then double click either side to enter pairing mode, or press the button for 3 seconds, there would be reminding voice" ready to pair". 3. Turn on the Bluetooth on your device and search "tws-i7" to connect. When the LED flash slowly in Blue, they pair successfully. Single pairing: 1. Long press the power button of the earphone until the LED flash in Blue and Red alternately, then it is ready to pair. 2. Please turn on the "Bluetooth" on your cellphone and choose "tws- I7" on your list, there would be reminding voice from the earphone saying "pairing success".
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