Seiko SNE577P1. The Seiko Prospex “Ninja Tuna” is a night-diving-inspired,solar-powered dive watch. It features the iconic cylindrical “Tuna Can” case shroud designed to maximize impact protection and wearability.

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Seiko SNE577P1. The Seiko Prospex “Ninja Tuna” is a night-diving-inspired,solar-powered dive watch. It features the iconic cylindrical “Tuna Can” case shroud designed to maximize impact protection and wearability.