Paradox Techno Blue Watch The Blue Particles Defy Gravity A sand timer for the techno age - a sleek and colourful design combined with some weird science Watch the coloured sand pour up instead of down defying gravity and measuring out a handy 25 minutes Perfect time for cooking, workouts, relaxation or leisure Large Paradox timer measures 13.5cm x 11.5cm (5.25" x 4.5")