Size : 182x42x30mm Packing : 50pcs/40x27.5x25.5cm/16kgs 1.Porrtable fold LED light
2.Eco-friendly,LED light
3.Carlendar alarm
4.Input power:USB 5V/500MA
5.Lithium battery:3.7V/1000mAH
6.Power for calendar:CR2025/3V