Sponge Surfwatch was created for active people who want to use the same watch for work, travelling, surfing and other activities. This watch is waterproof, so you can go surfing, swimming or fishing with it. Deep dive with it as it is 50 meters water-resistant. Sponge Surfwatch has a CR2032 battery which can be used up to 1 year, so you won’t need to charge it. It is also a smart watch and an activity tracker. You will get notifications from your mobile phone and it will track your activity such as steps, calories and distance, which you can check on your Android or iOS mobile phone app.