[Fully Integrated 5-in-1 Design] Our multi-functional carbon monoxide detector integrates 5 detection sensors: carbon monoxide sensor, temperature sensor, humidity sensor, atmospheric sensor and altitude sensor. All data is displayed on the HD screen, perfect design for outdoor and indoor air testing. [10 DAYS LIFE BATTERY LIFE] Our 5-in-1 CO detector has a built-in 2000 mAh high efficiency Li-Ion battery with power saving mode (the screen turns off automatically after and the sensor is still working), which provides about 10 days of battery life, which is more than enough to meet your needs. Support Type-C charging. [Portable Mini CO Detector] Size:3.4x2.1x0.8 inch, Weight:3.5 oz. It is a mini size and design 5 in 1 CO detector, easy to carry or hang it anywhere with a lanyard. [ Detection Range for Dairy] CO Detection Range: 0-1000 ppm; Temperature Range: 14°F-140°F; Humidity Range: 5%-95% RH; Barometric Pressure Range Barometric Pressure Range: 300-1100 ; Altitude Range: -500-9000 m Note:the color of charging data cable is random, and the designation is not accepted. Color: Material:ABS Package Contents: 1set * multi-function carbon monoxide detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.