Outdoor waterproof design with IP65-rated sealed housing withstand heavy rain,pool splashes,and -10°C to 50°C temperatures; durable plastic Resistance to accidental drops; battery operated candles (2xAA included) Battery not included deliver 100+ hours runtime for all-season outdoor use. Remote control timerProgr daily 4H/6H/8H auto cycles via 5m-ran remote; sync up to 12 units for synchronized patio lighting; adjustable brightn with one-touch [DIM/LIGHT] keys—zero manual intervent ned. The set includes: 12 flel candles,1 remote control,1 flashlight remote control,and 1 manual included in the paa. The dieter of these flel cylindrical candles is 2.2 inches; The height includes 4 inches/5 inches/6 inches. Each decorative candle uses 2AA batteries (excluding batteries). Safe and Worry-Free: Eliminating the risk of smoke,Flel candles have no open fles,reducing the risk of fire Waterproof design No need to worry about da caused by rain or other weather elements and are particularly suitable for home environments with children or pets. High Quality:We promise premium quality assurance for you. We stand behind our flel candles with a 12-month and lifetime technical support. If you have any s or concerns about our products,please don't hesitate to reach out to us. Our te is mitted to providing you with satisfactory soluts and ensuring that you're satisfied with your chase..