Little Genius Y1 is a phone watch specially designed for children to make phone calls independently and with secured positioning. As the first phone watch that comprises a detachable main device and watch strap that can be transformed into a watch, necklace, hanging ornament for use by changing the related accessories; we have designed many watch straps to fulfill consumer needs, of which the two-color silicone strap is the first double-color injection molded watch strap in the industry that uses materials of the same colors are injection molded at the same temperature for the color separation on the left and right of the watch strap, for which the process requires high precision; the watch strap uses the food grade silicone of America's Down Corning Company which has excellent abrasion-resistant, skin-friendly, anti-bacterial qualities. It solves the problem of skin allergy to a maximum degree while being safe for use and is comfortable.