UV tester The center of UV toywatch change colors according to UV index. we setting 4 standard colors (Low, Mid, High...) UV testerOur products have ... passed CE ISO and ROHS certification.UV Toywatch/ UV Bracelet/ UV Wristband/ UV Armband, that can measure UV index and indicate low, mid, high ... can be to your hand, if not received ,please contact with us, telephone, mail, fax.our logo UV tester