Power supply method,button battery includes

size :Width 4cm, height 3cm

Product Name: Night Light

Type:L40

Profuct Colors：White

Input voltage:DC 5V-1A

Rated Power:1W

Size:117x114x130mm

Materia:ABS+PC+Silica gel

Power Source: Rechargeable Battery

Display 2 colors: blue and yellow

Include:
1 * Night Lights
1 * USB Cable