Factory Price Solar Road Stud Ip68. 1. Shell material: all aluminum alloy material, the solar material is PC compression material. 2. Solar road stud Size: L108mm*W97mm*H25mm. 3. Solar panel: Solar panel (mono crystalline 2.5V/0.25W) 4. Solar rechargeable battery: NI-MH 1.2V/800MAH.