This is a rare SWATCH WATERPOWER S
Aqua Chrono SBM101
manufactured in 1994.
Minimal signs of storage
I am not sure if the box is dedicated to this model.
The chronograph is in working order and there are small scratches on the bezel body and strap due to aging but as you can see from the photos the condition is excellent.
Movement: 22 Jewels Quartz ETA 251
Functions: Date display Chronograph function (60-second counter 30-minute counter 12-hour counter)
Windshield: Reinforced acrylic
Water Resistance Rating 200 m (20 ATM)
Width: 43.5mm (excluding crown)
Height: 48.6
Thickness: 14.8mm
Weight: 51g
Case: Plastic
Belt: Stainless steel (bellows)
Belt color: Silver
Features: Chronograph