Feature 1ABS Material: Ozone detector is made of high strength ABS material, splash proof, dust proof and explosion proof. 2LCD Indication: LCD indicates the time and status of alarm, fault and low voltage, LCD indicates, sounds and vibrates. 3Complete Functions: Triple alarm mode (sound, light, vibration) is not easy to ignore, high security, durable standby, responsive. 4Back Clip and Screen Display: Metal back clip is used, and the buckle is tight to prevent falling off. 1.7 inch backlight HD LCD screen display. 5Small and Delicate: Small in size, light in weight, easy to carry, will not increase your burden, can bring you more convenience.Item Type:OzoneDetectorProduct Material: ABSColor: As Pictures ShownWeight: Approx. 820g / 28.9ozMeasurement Object: OzoneIndication Mode: Sound, Light and VibrationWorking Environment: Temperature -10C ~ +55C; Humidity <95% RH (Non Condensing)Accuracy: 5% F.SCharging Time: 4-6 HoursStandby Time: More Than 8 Hours ContinuousMeasuring Range: 0-20PPMResolution: 0.1PPMAlarm Point: Low 2, High 5 PPMPower Supply: USB 5VProduct Size (Without Back Clip): Approx. 11x6x3cm / 4.3x2.4x1.2inBattery (Shipped with Built in Battery): Model 803450, Polymer Battery, 1500mAh .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Host1 x Storage Box1 x USB Cable1 x Manual1 x Accessory1 x Storage Rope