The Champro Digital Down Box is ideal for clearly displaying the current down in all conditions. It couldn't be easier to use; one button turns it on and off, while another adjusts the numbers from 1 to 4. The brightness adjusts automatically to ensure everybody can see based on the lighting level. Runs on a built-in, rechargeable battery that lasts over 10 hours and comes with a charging cord Features Display brightness automatically adjusts based on field lighting conditions, so everyone can clearly see the down in all conditions Operates on a built-in 10+ hour rechargeable 8000mAh polymer lithium battery with a charging cord included; battery power light indicator shows remaining battery life The weather-resistant protective casing works in 0-120 Fahrenheit Double-sided LED digital number display height: 14"; pole height: 7' 5" Weighs under 8 pounds