Description Specifications: Material: Stainless Steel + Plastic Battery: 1x 2V 400mAh AA NI-MH rechargeable battery (Pre-installed) Solar panel size:40*40 Luminous: 6 Lumens Light Color: Warm White Waterproof grade: IP44 Product Size: 3.1*3.1*15.7" NOTE: 1. Please make sure the switch is turned on and put solar panel baths in sufficient sunlight for about 8 hours. However, it also depends on the geographical location, weather conditions and seasonal light availability. 2.The spike is hidden in the metal tube. Please pull them out before the first time use. 3. If the ground is hard and packed, moisten the ground with water before inserting the stake to avoid breakage.