Hign-concerned Chemical: None :Electrical Cas Leak Detector, al time monitoring to safety TFT LCD Color Screen: Fine Processof as Leak Detector JLY-CP100 High speed, high brightness, high contrast Move the main display device on your computer to the monitorFull color display, measurementresults at a glance! Flexible Serpentine Hose:It can be bent or straightened, suitable for limited space operation Built-in Large Capacity Lithium Battery:Standard Type-C charging interface, support mobile power supply Built-in 2000mAh large-capacity lithium battery, full power standby 8 hours (Note: The plug is not included in the delivery) Color: As Shown Material: plastic Package Contents: 1 set * combustible gas detectors 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.