For the first use, it is recommended to charge for 2-3 hours. This product comes with overcharge and overdischarge protection. When not in use for a long time, it should be fully and the switch should be turned off for storage, and refilled every three months. Product parameters: Product name: portable clock projection lamp Product model: -L47 Product accessories: manual + charging cable + 6 transparencies + base Lamp : LED Rated voltage: DC5V/1A Rated : 3W LED : 1W (1x1W/LED module) Charging time: 3-4H Battery capacity: 1200mAh Material:ABS+PC colour:yellow Package Contents: 1 x Projection lamp 1 x Charging cable 6 x Transparency film Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.