Stonex M1 is a small and very easy to use Bluetooth Laser Distance meter. The aluminium alloy housing makes Stonex M1 resistant to the harshest jobsite condition. Thanks to the adaptive 1.4 inches B&W display readings during day and night become easy and friend Never ending work with the long life lithium battery. M1 can communicate with Stonex Cube-a and other software with the built in Bluetooth module making the work more efficient and effective.