This is the third SPS-300 family, bought for Madame (I-300C-SPS 1VER and mother SPS-300C-2VER). Purchased to know the tide at all hours. Take the time to study the documentation certainly, this watch has many functions. The only downside is that if you wanted to adapt a new bracelet in case of breakage, it would buy exactly the same as seen form and box width nylon strap is not very aesthetic ...