These lights can be used for both indoor and outdoor use. Multicoloured LED lights with no need of a electrical socket or having to worry about trailing wires. These lights work for 6hrs on and 18hrs off. Easy to use just push the button to activate timer. Bulbs are not replaceable. All dimenensions are approximate. Not suitable for children unnder 3 years, contains small parts- potential choking hazard. Not intended for use in play by children. Insert batteries in orientation shown. Keep away from fire. Remove exhausted batteries. Never mix different batteries. Do not short circuit supply terminals. Do not recharge non-rechargeable batteries. Use only batteries recommended. If fitted, remove tab in battery compartment to operate.