【Waterproof & Portable】- outdoor string lights come with IP44 waterproof rating (battery pack is not waterproof), you can easily carry and place the Fairy string lights anywhere you like. It’s splash-proof and suitable for rainy days and our-door use. 【Safety and Energy Saving】- The mini string lights are made of high quality LED bulbs. Fairy lights batteries are powered by 3 AA batteries, low power and insulated from heat to keep it safe to touch. It’s guaranteed not to get burned even when the elderly and children touch it by accident. 【Bright Mini Led】 - Each LED string light is 20 feet / 6 meters long with 60 bright LED lights, setting a beautiful scene inside your bedroom or outside your patio or balcony. Also it can be wrapped around stair rails, trees, railings, fences, tents, etc. to decorate your party. 【Timer Program】- To avoid forgetting to turn off the lights, the fairy lights come with a timer function, push the switch to "TIMER", it will be on for 6 hours and off for 18 hours every day, and repeat every day. 【Sincere Service】 If you have any questions about our Warm White battery string lights, you can contact us directly. We will help you within 24 hours.