The J-Lite also features a microcontroller circuit for increased reliability and accuracy. Its 12 bright LEDs are great for reading in direct sunlight or dark areas and give the most precise readings of any LED meter available today. The LEDs cover the range of 6-30%. Specifications: Size: 7-1/2" x 3" x 1-3/4" Weight: 1 lb. 3 oz. Battery: 1- 9V alkaline Warranty: 3 years Delmhorst J-Lite Moisture Meter - FREE SHIPPING IN THE USA!! J-LITE$145.00 Need more information? Please feel free to contact us at 1-800-592-6940 - Ask for Extension 547 or Internet Sales.