4-in-1 Portable PH/TDS/EC/TEMP Test Pen Multi-Function Water Quality Tester1. Measuring range: PH: 0. 00 16. 00ph; TDS: 0 19990ppm; EC: 0 19990s cm 2. Resolution: 0. 01 ph; 1ppm; 1s cm; 0. 1 degree C; 0. 1 degree F 3. Accuracy: PH: + 0. 01 ph; TDS EC: + 2%; temperature: 0. 5 degree C 4. Battery: 3x1. 5V LR44 button battery (not included in delivery) 5. Temperature: 0. 1 60. 0 degrees Celsius; 32. 0 140. 0 degrees Fahrenheit 6. Calibration: PH: Three point automatic calibration (6. 86&4. 00&9. 18ph); TDS: 1413s cm; EC: 1413s

high light transmittance

and freely control play/pause

chat translation

non-slip and sweat-absorbing

and can connect to multiple devices at the same time

System: Allwinner melis system

clip in the collar will not collapse in a fold

it supports WiFi hot spot scan automatically and WiFi hot spot memory function

the sound quality is more vigorous

HD Cameras

Place it smoothly

37kgs / 11