Long lasting batteries and super easy to use - Powered by 2 x CR2032 batteries (included), the mini battery pack (2X0.87 inches) is super easy to operate and hide - Last up to 72 hours for constant use (triple long than others') and will be longer if use with breaks Safe to touch - The voltage of each battery is only 3V, so the lights are almost no heat, which are very safe to touch, you can place them anywhere you like, your bed, your wedding centerpiece, your mason jars and so on Perfect for wedding centeripiece, crafts and DIY The led string lights are made of high quality flexible and thin copper wire with 20PCS hight bright micro LEDs, each strand of the string lightscan be cut to any lengths you like, perfect for crafts and decorations Specifications Power Supply: 2x CR2032 battery (included) LED Color: Multicolor (RGBPW) LED Quantity Per Strand :20pcs Wire Length: 7.2FT/2M Cable Color: Silvery wire Waterproof: IP67 (Please note only the copper string parts are waterproof, NOT the battery holder)