newest and fastest personal professional radiation detector, the SOEKS Prime, is now available! The SOEKS Prime Compact Professional Radiation Detector is our fastest geiger counter to date, producing radiation readings in just 1 SECOND! Quickly becoming our best seller, the SOEKS Prime offers more features than its predecessors, but still possesses the same accuracy, precision, and dependability of all SOEKS devices. Work time on one charge has been doubled to work for up to 1,000 hours or 42 days continuously, so you won"t need to worry about battery failure, and it even includes an auxiliary power supply and rechargeable batteries as well. User Friendly radiation detector ultra sensitive Search Mode has been upgraded to provide even more sensitivity than the 01M, the Prime is capable of saving readings with timestamps, and one of our customers" favorite added features is its ability to display results in more than just one unit - Now you can read results in CPM, uSV/h, and/or uR/h! As all SOEKS devices, Geiger Counter Prime arrives pre-calibrated from the factory and needs no future calibration. Featuring an easy, user-friendly design, operating this remarkable device is a breeze, and a comprehensive instruction manual is included in the package as well. It also features convenient and effective audible, visual, and text alarms when background radiation is elevated. Also similar to our other SOEKS devices, the Prime is much smaller than a cell phone and extremely lightweight. It weighs only 2.8 oz, measures (HxWxD) 4.1" x 1.6" x 0.7", and fits easily into your pocket, purse, bag, car, or pretty much wherever you need to store or carry it with no hassle.