To activate your LED Recharging Candles, connect each to the charging tray, attach the A/C adapter & plug it into an outlet overnight (at least 6 hours recommended for full charge). Each LED Rechargeable Candle has an on/off switch on the bottom; keep them OFF while charging, for the brightest light possible. Dimensions: Height: 1.87 in. 4.7cm. Diameter: 1.50 in. 3.8cm. LED Colors: Amber Packaging: Retail ready, Each set in a plain white box- 16 per case.