The Tone Index by Huygens plays with light. The matte dial is coated with a glossy clear lacquer, so the contrast arises solely from the finish—no colorful dial, no flashy design. Depending on the angle of the light, the time display is clearly visible, barely noticeable, or disappears almost completely. The result is a watch that always looks a little different.
Quiet and reliable
The Japanese precision quartz movement runs absolutely silently—ideal for the bedroom, home office, or quiet living spaces. The coated stainless steel case is 6.2 cm deep (25-cm version: 4.6 cm), giving it an unusually three-dimensional look for a wall clock. Five-year manufacturer’s warranty.
Technical data
- Material: Coated stainless steel, glass, ABS back
- Color: Black
- Movement: Quiet quartz movement (Japanese precision)
- Battery: 1 × AA / LR6 / R6
- 25 cm: Ø 25 cm, depth 4.6 cm, weight 1.4 kg
- 35 cm: Ø 35 cm, depth 6.2 cm, weight 1.4 kg
- 45 cm: Ø 45 cm, depth 6.2 cm, weight 2.2 kg
- Warranty: 5 years
- Brand: Huygens, Amsterdam
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