1) Diameter: 8.5cm
2) Height: 16.5cm
3) Volume: 15oz.
4) Material: PS
5) Functions: switch at bottom, press once to activate fast-blink, 2 times for
slow-blinking, 3 times for steady-light and 4 times to turn off
6) For changing batteries: pull bottom from the cup gently, screws off, remove light-board, turn upside down and replace 3 batteries by sliding them out with screw-driver, and then repeat process in reverse to complete it