Features:��Each laser finger light has an elastic band that attach to fingers， strap to suit your finger， then switch on the bright light��Waving fast your hand in the dark， you will creating so much beautiful pattern， so these are great fun kit used in the party， bar， concert， and live show (Please remember that light can��t stay in the air， you should waving your hands fast) Specifications:��Color: Red & Blue & White & Green��Size: About 4 x 1.5 x 1.9 cm��Battery: AG03 Button Battery��Fluorescent Lifetime: 12 �C 24 hours Package included:40pcs x Laser Finger