Feature:   1. 2 Second Speed Measurement: With high accuracy and speed, starting up by a single button, you can test by dripping, the results immediately intuitive display.     2. Type C Intelligent Quick Charging: Built in 350mAh lithium battery, charging fast. You can use coffee concentration tester more freely and safer     3. Bluetooth Connection or Mobile monitoring: The original biological networking small APP covers data analysis model, services, sharing social and other multi dimensional functions.     4. Good Performance: Though professional manufacturing and superb craftsmanship, the coffee concentration meter pormotes the performance which is best and stable.     5. Elaborate Design: Coffee concentration with range of 0& 8209;26%, its accuracy is ±0.03% coffee TDS. The tester is waterproof and battery operated.             Specification:               Item Type: Coffee Concentration Tester  Product Material: ABS  Weight: Approx. 113g / 3..99oz  Range: 0~26% coffee TDS  Accuracy: ±0.03% coffee TDS  Resolution: 0.01% coffee TDS  Temperature Range: 5-45& 8451;  Capacity: Lithium ion battery 350mAh (delivered with built in battery)  IP Protection Level: IP67  Product Size: 84x23x14.5mm/3.31x0.71x0.57in  Suitable For: Measurement of coffee concentration                       Package List:   1 x Coffee Concentration Tester     1 x Bag       1 x Sling       1 x USB Cable       1 x Specification       1 x Dropper       1 x Wiping Cloth