Amazfit Helio Strap

All the recovery data. Zero subscription. Forever.

The Helio Strap is the most direct answer to the biggest objection people have about screenless trackers: the yearly fee. There isn't one. Buy it once, and every core feature stays open.

What it tracks, 24/7

• Heart rate, every second, plus HRV
• Sleep with a full stage breakdown, including naps
• Blood oxygen, stress, skin temperature and breathing rate
• Steps, calories and PAI
• Training load and VO₂ Max

What makes it different

• BioCharge — a live energy score that rises with rest and drops with strain, so you can see at a glance whether you have a hard session in you today
• 27 sports modes including automatic strength-exercise recognition and HYROX Race Mode
• Arm-worn design — sits securely on the upper arm, where movement interferes with the sensor far less than a wrist device during heavy lifting
• Your data travels — syncs to Strava, adidas Running, komoot, Google Fit and Apple Health

Specs

• Battery: up to 10 days typical use, up to 25 days in battery saver
• Charging: under 2 hours, magnetic head with USB-C
• Weight: 20 g
• Water: 5 ATM (50 m) — swimming included
• Fits arm circumference 145–205 mm
• Subscription: none. All core features free in the Zepp app
• Works with iPhone and Android

Best for: serious training on a budget, and anyone who refuses to pay a yearly fee to read their own data.