• Uses the refractive index method to measure the specific gravity of urine. • Digital display allows for easy and accurate readings. • Full-body water resistant (IP65). Run it under water for fast and easy cleaning. • Urine SG: 1.0000-1.060. • Minimum Scale: 0.001. Accuracy: ±0.001. • Automatic Temperature Compensation: 50 to 104°F. • Measurement is displayed in 3 seconds. • Lightweight, 100 g. • Dimensions: 55 x 31 x 109 mm. • Power: Two AAA alkaline batteries.