

The Delta Pro is a rugged smartwatch with a metal shockproof bumper and 3ATM water resistance. It pairs a speaker and dial/mobile call control with optical heart-rate, blood pressure, sleep and step tracking across more than 15 sport modes. A 30-minute charge is rated for up to 21 days of use. It suits buyers who want a tough, long-lasting watch for calls and basic fitness tracking rather than a full app ecosystem.
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Lowest price we've seen: $206.71 on Nov 11 at eBay. Tracked across 1 store since Nov 11.
Rated 4.6 out of 5 from 316 ratings, owners largely praise the build and battery life. Some question the accuracy of the health readings.
The Delta Pro is a smartwatch with a built-in speaker for calls. It has call controls, including a dial pad and phone selection. It also shows SMS alerts and notifications from more than 10 apps.
The watch has a rugged metal shockproof bumper and a 3ATM waterproof rating. An optical heart rate sensor tracks health and activity data, including sleep, blood pressure, heart rate and steps. It offers more than 15 sport modes.