1Most Power 11 Big Solar Panel, Adding additional 6 solar panel on the basis of before, provide great energy for the lighting, high quality material made this solar flagpole light more durable 2Longer battery life, built in 2000mAh large capacity rechargeable battery, 30 brighter energy efficient bulbs. After a day sunlight charge, it can work up to 10 hours 3Automatically turns on at night and turns off when daylight returns. Be sure to turn the light ON via the ON/OFF button before installation 4Fitting for most of flagpoles(Through hole for 3cm: Thanks to independent solar charging system, there is No hassling with wires and electrical connections. Easy to install, no special tools required 5More photovoltaic cells: To transformed more solar energy into electricity that be stored for showtime. (Batteries are initially installed for the shipping demand. Please assure to use)