ScoreBand 4-in-1 Digital Scorekeeping Wristband Watch. Focus on the game, not the score. Never lose track of where you stand again! Thoughtfully engineered for active wear with a sleek design and quick-touch functionality, ScoreBand is the world"s first digital 4-in-1 scorekeeping wristband watch. With modes for Golf, Tennis, and other sports/activities, ScoreBand ensures that you always know the score! Also ideal for easy tracking of golf stats and other counts. As a bonus, ScoreBand"s silicone wristband is infused with negative-ion emitting minerals. Available in four sizes, so there"s a ScoreBand fit for everyone! (Small=14.5cm; Medium=16.0 cm; Large=17.5 cm; Extra Large=19.0 cm). One-year limited manufacturer"s warranty. Recipient of the 2012 PGA Merchandise Show "Best Product Concept" Award. Comes with an easily replaceable LR927 button cell battery, and weighs a mere 20 grams! Switch between 12 and 24 hour timekeeping by pressing and holding down the two buttons on the face simultaneously for five seconds. Materials: Silicone & Polypropylene. Dimensions: Small: 3"L x 1.9"W x 0.875"H; Weight: 0.07 lbs. Medium: 3.125"L x 2.1"W x 0.875"H; Weight: 0.07 lbs. Large: 3.25"L x 2.25"W x 0.875"H; Weight: 0.07 lbs. Extra Large: 3.5"L x 2.5"W x 0.87"H; Weight: 0.07 lbs.