The Nokta Simplex BT offers much more than the Simplex+ standard and many improvements have been made. The search coil has been updated, the lower and middle rods are made of carbon, the user interface has been changed, the response speed can be adjusted, the sound interruption, the sound frequency and the sound volume can be adjusted and the device is now waterproof up to 5 meters. The Simplex Ultra also has 6 different modes and a built-in Bluetooth module.