The Seiko SSC305 is a men's solar-powered chronograph watch built around a solid 45mm stainless steel case with a 14mm profile and a unidirectional rotating black bezel. Powered by Seiko's V172 solar quartz caliber, the movement converts ambient light into electrical energy and holds a power reserve of up to 6 months when fully charged, eliminating the need for battery replacements.

The sunray blue dial is accented with white LumiBrite luminous hands and Arabic numeral hour markers for strong legibility in low light. A scratch-resistant Hardlex crystal protects the dial, and the watch is water resistant to 100 meters, making it suitable for swimming and active water use.

Functions include a 1/5-second chronograph, dual-time display, 12-hour settable alarm, and a date window. The watch is equipped with a 20mm solid stainless steel bracelet secured by a fold-over push-button clasp. It comes backed by a 3-year limited warranty for US purchasers and a 1-year international warranty.