Caution: color: we ship according to the color of the first picture, in the package: If the quantity is not stated in the description, we will ship the item according to the quantity and model in the title.If the title does not have a quantity, it is 1pcs. Electromagnetic radiation tester home appliance testing meter phone computer radiation digital detector the product is shipped based on the color or size of the main image of the product page. 100% Brand new and high qualityootdtyfeatures:one detector with two purposes. It can simultaneously test electric field and magnetic field radiation. Sound-light alarm, when the test result exceeds the safe value, the detector will automatically alarm. Data lock, one key lock radiation value. Lcd graphics display the trend of radiation values. Radiation assessment, remind you whether the radiation value is safe. Stylish design, easy to operate, convenient to move or make field measurement. Used for test and understand indoor and outdoor electromagnetic radiation situation. Specification:product name: electromagnetic radiation testerunit: electric field: v/m, magnetic field: μtaccuracy: electric field: 1v/m, magnetic field: 0.01μTmeasurement range: electric field: 1v/m-1999v/m, magnetic field: 0.01μT-99.99μTalarm threshold: electric field: 40v/m, magnetic field: 0.4μTreading display: 3-1/2 digit lcdtest bandwidth: 5hz-3500mhzsampling time: about 0.4 Secondstest mode: dual mode simultaneous testoverload prompt: maximum value of measurement range on lcdoperating temp erature: 0°c~50°coperating humidity: relative humidity below 80%working voltage: 3.7Vpower supply: 3.7V lithium batterymaterial: abssize: app.60X25x133mm/2.36X0.98X5.24Incolor: black + redquantity: 1setnote:please allow 0-1cm error due to manual measurement. Pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you package includes:1 x electromagnetic radiation tester1 x manual other accessories demo in the picture is not included.