One Touch Easy Control TO46R features various brightness levels and mode, you can use the same buttom to switch modes. Tiny and Portable Small but powerful with a weight of just 81g, it won’t give you extra burden even carrying around in your pocket. Smart Heat Protection Flashlights of all kinds produce heat, with the temperature control design, TO46R protects the flashlight from overheating. Flexible Charging For Convenience TO46R can be charged with your Smartphone charger, or using a micro USB cable to juice up with a power bank or your laptop. 2 Meters Underwater TO46R features a rubber cap to prevent dirt or grime trapped in the micro USB port, and it resistant to a submersion up to a maximum depth of 2 meters for 1 hour.