bailbye
سؤال: I see the diodes are low-level laser; does this device also use the red-light (650nm)?
السؤال بواسطة jzora54 على 2019-09-21 14:34:13
سؤال: How do you adjust the time?
السؤال بواسطة Don على 2018-04-13 18:41:02
bailbye Automaticly when the bracelet is connected with your phone
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bailbye Yes, the device uses red light at 650 nm. Without danger.
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