Specification: Item Type: Solar Panel Material: Polysilicon Weight: Approx. 19g / 0.7oz Product Size: Approx. 40x30mm / 1.6x1.2in Power: 0.15W Working Current: 0.05A Working Voltage: 3V Conversion Efficiency: 18.5% Feature: Without power storage function Uses: Used for rechargeable batteries, home lighting and various low-power equipment, scientific projects, solar water pumps, small solar systems, etc. Package List: 4 x Solar Panel Note: 1. Please allow 01 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.