It's never a good idea to guess with measurements, that's what measuring tools are for. This product has several handy features, for instance Bluetooth connectivity.
From Amazon
Bosch Professional 12V System Laser Level GCL 2-50 CG (without Battery and Charger, green laser, interior, W/App function, Mount, Visible Working Range: up to 20m, in L-Boxx), 0601066H03
Conrad Electronic
Bosch Professional GCL 2-50CG Cross line and plumb dot laser Self-levelling Range (max.): 20 m