Seiko Watch Prospex Land Tortoise SRPH15K1. This watch shape is known as aTortoise,inspired by the popular diving watch shape nicknamed by Seiko fans as theTurtlebecause of its shell like profile. Powered by the 4R35 Automatic movement, with 200m water resistance, highly visible indices and screw down crown at 4 oclock, with an ultra scratch resistant sapphire glass this resilient timepiece is designed for stylish practicality. Seiko Prospex watches are designed for sports lovers and adventure seekers in the water, in the sky or on landand are robust for everyday wear, whatever the environment. Since launching Japans first divers watch in 1965, Seikos innovative watchmaking has changed global dive watch standards.