Just connect it to the USB connector of your computer or USB adapter and place your watch. LED charger for solar watches that can be easily and easily charged. To prevent the lack of charge of the solar watch! You don't have to worry about the weather or the time of day, and you can charge at home at any time you like. Light Source: LED Light Illuminance: Equivalent to about 30,000 Lux Input Voltage/Current: DC5V/1A Rated Power: 5W USB connector: A type → power supply, Micro-B type → input side Accessories: Charger, USB cord, instruction manual/warranty card ■ How to use 1: Connect the USB cord (Micro B type / output voltage 5V) to the charger. 2: Plug the USB cord (A type) into the USB connector or USB adapter of the computer. 3: The main body glows. 4: Place the watch face facing the light source part of the main unit. ■ Precautions for use ・ Accessories are exclusive to this product. We do not guarantee any defects or breakdowns due to use with other products. ・When using continuous lighting, the LED may deteriorate faster. ・Depending on the computer you are using, you may not be able to use it unless you have set it so that it can recognize the USB device. ・Do not use in an unstable place that is not level. ・For safety reasons, do not look directly at the LED light source. ・ The charging time depends on the battery level of your watch and ・Depends on the performance of the solar panel of the watch. ・Please use a USB power supply with a 1A output. ・ Some special USB power adapters such as for quick charging (for mobile phones, smartphones, etc.) Doing so may cause a malfunction. ・The following charging methods may adversely affect the device. Please refrain from using it. Charging from a fast charger for smartphones, mobile phones - Charging from a special high-power USB device ・ Connecting to the USB output of an AV device such as a TV (the power may not be turned on at all times) ・ In the case of charging from a USB hub, the power supply is unstable. ・ It may damage the LED light. ・Avoid using the power supply from the USB hub. ・When not in use, unplug the USB cable from the power supply. ・If the temperature of the place where it is used is high, the life of the LED will be shortened. ・ Watches using luminescent paint are due to the characteristic of luminous paint to store light. ・ When exposed to light for a long time, it looks like it emits light, but it returns to its original state after a period of time. ・If the watch does not drive even after charging for a long time, there may be a problem with the watch itself. ・If you have any questions about your watch that will be charged, please contact the manufacturer of the watch. ・This product is for general household use only. Not for professional use.