Build yourself an inexpensive UV Timer light for tooth whitening. This little project could save you in the region of some £100 to £400 pounds It’s ideally for dental nurses who have to buy their own ...

Choose between 2 and 3 minutes (default 2 minutes). The interval between quacks can be set (10, 20, 30 or 60 seconds; defaults to every 20 seconds). Choose the colour of the timer. Choose between 3 ...

It shows different parts of the mouth (upper right outer, lower left inner, etc) with a countdown timer for how long to focus on it (currently 15 seconds each), along with a brief delay at the start ...