Johntoy glowstick These glowsticks are ideal for parties. Make fun creations with the sticks or use them as lighting. With four different colors it is a stunner on every game! This stick works on three supplied button cell batteries. Specifications: Color blue Gender: junior Material: plastic Length: 21 cm Package dimensions: 28 x 8 x 2 cm (L x W x H) Batteries: 3 button cell batteries (included) Age: 4 years and older