Really. No monthly fee, no annual renewal, no premium tier you need to unlock to see your own data.

You pay once for Voltra and every single feature is yours forever from day one. No small print. No surprises.

Voltra uses the same optical sensor technology found in premium wearables. Our blood pressure readings have been independently compared against cuff readings with consistently closer than other wearables on the market. As with any wrist-worn tracker, accuracy is best achieved by wearing the band snugly and consistently - particularly overnight for sleep and HRV data.

Up to 40 days on a single charge. You won't be taking Voltra off to charge it every night like a smartwatch - most users charge it once every few weeks and forget about it in between.

WHOOP charges up to £239 a year in subscription fees on top of the device cost. Voltra costs £39.99. Once. That's it. Over three years, switching to Voltra saves you the equivalent of nearly £700 in subscription fees - for the same quality health data with no ongoing commitment.

Voltra is designed to work for everyone. Whether you're a fitness enthusiast chasing personal bests, someone looking to get a better handle on their health, or you simply want to understand your sleep, stress, and body better - Voltra was built for you.

No experience needed, just a desire to know more about yourself.

Yes - Volt is IP68 rated which means it's fully waterproof. Wear it in the shower, the pool, the sea or the gym without any concern. You never need to take it off.

You have 30 days to change your mind. If Voltra doesn't exceed your expectations, send it back and we will refund you, no questions asked.