To achieve the best solar charge with a solar watch, ensure you are following the tips below.

Tips for Achieving the Best Solar Charge

Have the watch lens face directly towards the sun

Avoid covering the watch lens with a sleeve
Wear the watch so that the watch lens is on the outside of your wrist

There are some items that are out of your control, but will affect the solar charging. Some have minor affects, while others have a greater affect. Below is a list of what may affect solar charging¹.

The Following Affects Solar Charging

Position of the sun, including time of day and current season²
Weather, including clouds, rain, and other weather patterns that may block or obscure the sun
Exceeding solar charging temperature thresholds, from 0 to 60°C (from 32 to 140°F)
Charging with sources other than the sun³
Whether the watch is on or off⁴

¹The list of what affects solar charging is not an all-encompassing list. Anything that may limit the sunlight from reaching your watch lens will affect solar charging.

²The further away from the equator you are, the more seasons will affect charging.

³While you can use non-natural light, such as from fluorescent lights, to charge your watch, the Power Glass is optimized for the spectrum of sunlight.

⁴Solar charging can take place while the watch is off, and can yield greater charge from the same solar intensity than when the watch is on.