2 in 1 multifunctional hourglass: It can be used as a sleeping night light and a sand timer. 15 minutes LED light -- As the sand slowly flows the light dims gradually, the LED Light will automatically put out when all the sand ran out, perfect for people who like reading books before going to bed.
Glass and Sand
Power supply: USB cable Voltage: 3.7V Power: 0.13W Battery: 220mah Size: Approx. 16.5cm / 6.49in