SEIKO PROSPEX SUN021 GMT Kinetic Tuna Air Diver

The Prospex Kinetic GMT Diver’s watch has a personality all to its own. The Prospex SUN021 watch is designed and manufactured to withstand up to 200m going under the water, and is suitable for wearing while scuba diving.

The dial is 3-dimensional which is notable among Seiko Prospex Kinetic GMT Diver’s watch designs. Legibility remains very high, and dial is very visually appealing. Being a GMT it has a fourth hand used for second time zone which makes it a multifunctional sports travel watch.

Part of its appeal is its size, being larger. This isn’t necessary from a technological standpoint, but is really about going along with the traditional large size of the Tuna-style Seiko diver watch cases.

The crown and power reserve buttons have screw-down protection to prevent any accidental operation.

The movement is Seiko’s unique Kinetic technology. Ever since 1992 when Seiko made its first Kinetic diver’s watch, this high-precision technology has delivered to divers a combination of timing accuracy and security that no other watch can offer.

The precise and secure operation of the uni-directional bezel prevent accidental rotation, so that the time measured is never shorter than the actual elapsed time.

The case has a two piece construction that delivers maximum security safeguard against shock. The main case is protected by an outer shell.