Seiko SRPE17J1 vs Seiko 5 Sports SRPD76K1

Both are automatic Seikos with the same 41-hour power reserve, so the real choice is about the movement and the case. The SRPE17J1 is the dressier everyday watch: slimmer, lighter on the wrist with a steel bracelet, and its 4R35 has no day or date complication. The SRPD76K1 is the sportier pick: the 4R36 adds day and date, water resistance is rated to 10 bar, and it wears larger and thicker on a silicone strap. Buy the SRPE17J1 for a clean, understated daily watch; buy the SRPD76K1 if you want day-date and a more rugged look.

• Choose the Seiko SRPE17J1 if you want a slim, understated automatic on a steel bracelet for office and everyday wear.
• Choose the Seiko 5 SRPD76K1 if you want day and date, 10 bar water resistance and a sportier watch on a silicone strap.