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This audio sunglasses is additionally delivered with 2 pairs of lenses of different colors, which can be replaced according to your preference. 1. When turned off, Press and hold the “-” for 5 seconds, (5 seconds is very long don’t let go). 2. Until the Bluetooth indicator blinks Green and red, now the smart sunglasses is ready for pairing. 3. Turn on the Bluetooth on your mobile device and look for Vision 5B. Stainless steel screws and glue fixed, sweat-proof design product & buttons Small size and big function Speaker sound hole sweat-proof design







