Citizen / Sport$378.90Current price
Sport Automatic Blue (NH7530-52M)
A sapphire sports automatic with a retro day-date
Sport Automatic Blue (NH7530-52M)
or Promaster Dive Eco-Drive Light Blue?
Choose the Sport Automatic if you want a mechanical movement, sapphire and a sporty everyday look. Choose the Promaster Dive if you swim or snorkel often: it doubles the water rating to 200 m and runs on light, so it never needs winding.
Citizen / Sport$320.66After codeBefore code$356.28Save $35.62
Promaster Dive Eco-Drive Light Blue
A solar-powered diver that never needs a battery
We may earn a commission if you buy through our links. How this works.
Choose the Sport Automatic Blue (NH7530-52M) for
- Sapphire crystal
- Smaller case for slimmer wrists: 42 mm vs 44 mm
- Mechanical automatic movement
- Watch Ritual code SEBASTIANBASSOL supplied for 10% off
Choose the Promaster Dive Eco-Drive Light Blue for
- Costs $22.62 less at its listed price
- More water resistance: 200 m vs 100 m
- Slimmer: 11 mm vs 13 mm
- More wrist presence at 44 mm
- Solar power: no battery changes or winding
- Watch Ritual code SEBASTIANBASSOL tested: $320.66 before shipping
The specs, side by side.
Sport Automatic Blue (NH7530-52M)Promaster Dive Eco-Drive Light Blue
Listed price$378.90 at Watches of America$356.28 at Watches of America
Case diameter42 mm44 mm
Thickness13 mm11 mm
Lug-to-lugNot publishedNot published
MovementCitizen Caliber 8200 automatic with hackingCitizen Eco-Drive E168 (light-powered)
Power reserve42 hoursLight-powered
Water resistance100 m200 m
CrystalSapphire crystalMineral crystal
Strap / braceletStainless-steel bracelet, fold-over clasp with hidden push-buttonsStainless-steel bracelet, safety fold-over clasp with push-buttons
Who should buy which.
The Sport Automatic Blue (NH7530-52M): A buyer who wants sapphire, 100 m water resistance and a mechanical movement for under $400. Skip it if you prefer slim or small watches; the Citizen NH8350 or a 38 to 40 mm diver suits you better.
The Promaster Dive Eco-Drive Light Blue: Someone who wants a genuine dive-rated watch that keeps running without batteries, winding or regular servicing. Skip it if you have a smaller wrist or want sapphire. The Tissot PRX Quartz is a smaller everyday alternative, and a mechanical diver suits buyers who enjoy an automatic movement.
Before you order.
At 42 mm and 13 mm thick it is a substantial watch; check it against one you wear. The reserve is a typical 42 hours, so it will stop if left off the wrist over a weekend.
At 44 mm across it wears large; check the size against a watch you own. Citizen uses mineral crystal rather than sapphire, so it is more prone to scratches over the years.
A few good questions.
Should I buy the Citizen Sport Automatic Blue (NH7530-52M) or the Citizen Promaster Dive Eco-Drive Light Blue?
Choose the Sport Automatic if you want a mechanical movement, sapphire and a sporty everyday look. Choose the Promaster Dive if you swim or snorkel often: it doubles the water rating to 200 m and runs on light, so it never needs winding.
Which is cheaper, the Citizen Sport Automatic Blue (NH7530-52M) or the Citizen Promaster Dive Eco-Drive Light Blue?
The Citizen Promaster Dive Eco-Drive Light Blue is listed at $356.28, against $378.90 for the Citizen Sport Automatic Blue (NH7530-52M), checked 2026-10-16 and 2026-10-17.
Which is more water resistant, the Citizen Sport Automatic Blue (NH7530-52M) or the Citizen Promaster Dive Eco-Drive Light Blue?
The Citizen Promaster Dive Eco-Drive Light Blue is rated to 200 m, against 100 m for the Citizen Sport Automatic Blue (NH7530-52M).
Is there a discount code for the Citizen Sport Automatic Blue (NH7530-52M) or the Citizen Promaster Dive Eco-Drive Light Blue?
SEBASTIANBASSOL is our supplied code for 10% off at Watches of America; confirm it applies at checkout. SEBASTIANBASSOL is our supplied code for 10% off at Watches of America; it lowered the Citizen Promaster Dive Eco-Drive Light Blue to $320.66 in our test.
More head-to-heads.
- Citizen Sport Automatic NH7530 vs Tsuyosa
- Citizen Sport Automatic NH7530 vs Seiko 5 Sports SRPD55
- Citizen Promaster Dive vs BODERRY Admiral
- Tissot Seastar 1000 Quartz vs Citizen Promaster Dive
- Thorn SHY036 vs Citizen Promaster Dive
Specs: Citizen product page (checked October 16, 2026) and Citizen product page (checked October 17, 2026). Prices are the listed prices at the store each shop button opens.