Seiko Watch Prospex Land Tortoise SRPH15K1. This watch shape is known as a ‘Tortoise,’ inspired by the popular diving watch shape nicknamed by Seiko fans as the ‘Turtle’ because of its shell like profile. Powered by the 4R35 Automatic movement, with 200m water resistance, highly visible indices and screw down crown at 4 o’clock, 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 land – and are robust for everyday wear, whatever the environment. Since launching Japan’s first diver’s watch in 1965, Seiko’s innovative watchmaking has changed global dive watch standards.