Electronic Sand Timer Hourglass Timer Game Kitchen Timer Bedroom Ornament Specification: Name: electronic gravity sensing hourglass Light colour(optional): yellow/red/green/blue Battery: built-in 500mah battery, fully charged expected to work for 5 hours Material: plastic shell The product default 1 second 1 point, can be set 1 minute or 1 hour 1 point jump off. 0-30 minutes free to set the hourglass time. Description: There is a button on the left side of the product, press 3 seconds to turn on the power off is also press 3 seconds. There is a usb port next to it, plug it in and charge it. There is a led in the gap, red is charging, and when the light turns blue, it's fully charged. After the power on, it will drop one in one second, press it to show M, it will drop one in one minute, then press it to show H, it will drop one in one hour. Press the button for 2 seconds and release it to adjust the brightness. Package Includes: 1pcs*Timer (other products not included) Notes: The product has no sound, thanks!