This is an LED light kit that can be made up into a number of pre-used enclosures - like bottle tops, mince pie and tea light cases. Once charged and switched ON, the light will stay on for between 3 and 4 hours.
 
The diameter of each light is 28 mm and total height is 25 mm.
 
The basic kit consists of 2 x tea lights + a USB charger lead. 
 
Optional accessories are 2 x bottle tops, and a dual solar charger lead (for use in the summer).