Keep cool in your tent with this two speed fan and LED light. Operates on 4 x D sized batteries (not included) with up to 48 hours run time. Energy efficient white LED light rated to 50 lumens.A handy camping accessory for summer, this clever battery operated two speed fan incorporates an energy efficient 50 lumen (CREE) LED light. Fan can be operated for up to 48 hours on low or 24 hours on high, light will give you 100 hours plus running time on low setting.