Light weight and portable, accurate water measurement, take care of the whole family's drinking/using water safety. Features: One button to switch function. Whole machine waterproof. Battary can be replaced easily. Portable design for easy carrying and storage. Quick and accurate test. Large and clear screen to view the value. Real-time display the remaining battery power. Specifications: Type: with backlight, without backlight (optional) Main color: white+blue Main material: ABS PH measuring range: 0-14 TDS measuring range: 0-200000ppm EC measuring range: 0-200000/cm Salinity measuring range: 0-20% ORP measuring range: 1999MV S.G measuring range: 1.000-1.222 Temperature measuring range: 0-60 Battery: 3 * LR44, 1.5V, 160mAh Item size: 185 * 37mm / 7.3 * 1.5in Package size: 210 * 80 * 50mm / 8.3 * 3.1 * 2.0in Package weight: 170g / 6.0ounce Packing List: 1 * Water Quality Tester 3 * PH BufferPowders 1 * PH TestPaper