Using your Tissot Seastar 1000 watch is easy. Just put it on your wrist like any other watch. When you're going for a swim or engaging in watersports, you don't have to worry about water damage thanks to its high water - resistance. But remember, don't operate the crown underwater as it may affect the water - tightness. To keep your watch in good condition, clean it regularly with a soft, dry cloth. Avoid exposing it to extreme temperatures or strong magnetic fields. If you notice any issues, it's best to take it to a professional watch repair service.