Sunlight and fluorescent indoor light directed at the watch face will charge your VIANI Time Piece. The solar panel is found beneath the dial face. We recommend not covering the watch face with your sleeve when outside to optimize charging.

We recommend ensuring that the dial face is exposed to light while in use or stored away. Two minutes of direct sunlight exposure is enough to charge the watch for the entire day. Six hours of direct sunlight is enough to charge the watch for the entire year.

Expected life per charge from full charge to stoppage is 12 months. This assumes that you charge the watch completely and then leave it in a dark cabinet for 12 months. 

When not in use, we recommend storing your VIANI Timepiece on a well lit window sill, or adjacent to a lamp exposing the dial face towards the light. This ensure that the solar cell is continually charged and operational.

The second hand will move in two second intervals indicating that the watch is low on charge. Simply place the watch by a window sill or wear in direct sunlight in order to recharge the solar cell.

A stopped watch indicates a fully discharged solar cell. We recommend exposing your VIANI Timepiece to direct sunlight for up to 4 hours to re-charge the solar cell. Direct sunlight is required and much more efficient in restarting the solar cell vs indoor or indirect windowsill lighting.

No, there is an overcharge prevention function to prevent the solar battery from deterioration or breakage. Please be cautious to not set the watch in an environment that will exceed 50°C (122°F).