Benson Watch Winder Smart Tech II 4.20.B. The Dutch watch winder brand Benson presents its latest Smart Tech II models. These models are characterized by excellent quality, good functionality and a beautiful finish. The Benson Smart Tech II 4.20.B watch winder is suitable for winding 4 automatic watches and has a storage drawer to store other watches and jewelry. Each rotor is individually adjustable in terms of direction of rotation and number of revolutions per day. This makes the Benson Smart Tech II 4.20.B watch winder suitable for any automatic watch, regardless of watch brand or model. The flexible watch holders, LED lighting and the handy touchscreen make this watch winder an excellent choice. This watch winder comes with a 2 year warranty, adapter and manual.