This item is a custom product, personalized text is available Operating Instruction of LED Light 1：Take the LED light out of the knife, Remove the insulation film of battery 2：Please refer to the order of 1,2,3 in the picture for installation steps; 3：Tighten the lamp. lamp on; When loose the lamp, it will turn off. （The surface of the button battery with logo is near the spring) This custom knife will be a practical gift for men of any age. Your groomsmen will present this beautiful and practical gift will appreciate its convenience, sharp blade and easy but reliable folding mechanism. There is a clip on the back of the knife handle which allows to attach it to the belt or on the pocket. This folding knife will easily fit inside the pocket without causing any discomfort to the owner.T Item Details Material: stainless steel Full Length: 8" Handle Length: 4.5"