Item Type: Digital Nuclear Radiation Detector Weight: 112g/3.95oz Material: ABS Detection Count: 48mm Geiger counter Measuring Range: 00.08Sv/h~9999Sv/h Working Environment: -10~50C Humidity: 95%RH No condensation Battery Capacity: Polymer lithium battery 400mah (inclusive) Battery Life: 15~24 hours, charging time :1 hour Charging Mode: USB type c Product Size: 10.5 x 3 x 1.5cm/4.13 x 1.18 x 0.59in Package List 1 x Detector 1 x Instructions 1 x USB Cable 1Portable Lanyard: Anti fall design, anti loss, anti fall intimate design, convenient outdoor use, you can easily take it out for outdoor use. 2Alarm Value Can Be Set: Support sound, flash, vibration three alarm modes, you can set the alarm value according to your own needs. 3Nuclear Radiation Detector: Real time monitoring of X rays, Gamma rays, hard beta rays, to meet your monitoring needs. 4Multifunctional Page: Real time monitoring of instantaneous dose rate, cumulative dose, average dose rate, easy observation in different light environments. 5Large Capacity Battery: 400mAh battery, the battery life is about 10 hours in the bright screen state, and the standby state can be about 24 hours.