Built-in magnet Refrigerator iron,The magnet sticks to where you are wanting the light to be, and then the light itself has a magnet built into it.Please stick to the non-rion postion together with the sheetiron & sticky tape. Color: Silver Specifications: Color temperature: 6000-6500K(Cool white) LED life: >50000H LED Quantity: 10 SMD 2835 Luminous flux: 100lm (+/- 20%) Battery powered: 3.7V (build-in 850 mAh Polymer lithium battery) Influence Distance: 3m/10ft (+/- 20%) Influence Angle: 100(+/-20%) Charging parameter: 5V, 500mA (or 1000mA) Size: 7.5*0.5*1.33in Package: 1x LED light 1x Operation instruction 1x Micro USB cable 1x Sheet iron 4x Sticky Tape Tips: 1.Not waterproof, do not use this product in damp places. 2.Please charge at least once a month to extend battery's life if not in use for long time.