S without Light: Power: 3 W, Suitable Aquarium: 20-50 cm (7.87-19.69 in), Thickness can be clamped: 20 mm (0.79 in), Size: 14 5.5 5.2 cm (5.51 2.17 2.05 in). S with Light: Power: 3.6 W, Suitable Aquarium: 20-50 cm (7.87-19.69 in), Thickness can be clamped: 20 mm (0.79 in), Size: 18 5.5 5.2 cm (7.09 2.17 2.05 in).
