Feature:1. [High Precise Sensor] Equipped with high precise sensor and microcontroller processor, this EMF meter can quickly and accurately measure electromagnetic radiation values.2. [Dual Function] This device can simultaneously measure both electric and magnetic fields, providing comprehensive EMF detection capabilities.3. [Overlimit Alarm] With automatic overlimit alarm functionality, this meter offers three types of alerts, including audible, visual, and display warnings when exceeding the alarm threshold.4. [USB Rechargeable] Say goodbye to battery replacements! This meter features a built in 600mAh high performance lithium battery that can be easily recharged via USB, ensuring convenience.5. [Portable Size] With a compact and portable design, this EMF radiation detector is suitable for daily use, allowing you to monitor electromagnetic fields generated by household appliances with ease.Specification:Item Type: EMF MeterMaterial: ABSBattery Type: Lithium Battery (Built in)Battery Capacity: 600mAhTest Mode: Dual Film Simultaneous TestingTest Bandwidth: 5Hz to 3500MHzOperating Temperature: 0 to 50Operating Humidity: Below 80% RHSampling Time: 0.4 Seconds.Package List:1 x EMF Meter1 x Charging Cable