Holiday Bright Lights Led Spheres 7.5" Red Bulbs Led 100 Count 100 count , Size : 7.5", Red LED bulbs Will last 235 hours on one battery (battery is hidden inside the sphere) Includes timer for 6 hours on and 18 hours off then repeats Requires 1 "D" battery (not included) Indoor/outdoor use, Includes detachable hanging wire