HSRing X3
A 3.4-gram titanium ring that tracks sleep, heart rate, temperature and blood oxygen. Seven-day battery and charging case included.
- Delivery
- Ships in 3–5 business days
- Shipping
- Free over $99
- Returns
- 30 days, prepaid label
- Warranty
- One year
Overview
Light enough to forget at night
3.4 grams and 2.6 mm thick, with a rounded inner edge. Most people stop noticing it on the second night.
Three sensors on the palm side
Optical PPG, a thermistor pair and an accelerometer sit where the finger arteries are closest to the skin.
Seven days, then an hour on the case
A full charge takes 65 minutes. The case holds three more charges, so a two-week trip needs no outlet.
Specifications
Physical
- Material
- Grade 5 titanium
- Weight
- 2.8–3.9 g by size
- Width
- 7.9 mm
- Thickness
- 2.6 mm
- Sizes
- US 7–13
Sensors
- Optical
- Green, red, IR PPG
- Temperature
- NTC pair, 0.01 °C
- Motion
- 3-axis accelerometer
- Sampling
- Up to 250 Hz
Battery & charging
- Battery life
- Up to 7 days
- Charge time
- 65 min
- Case capacity
- 3 full charges
- Case port
- USB-C
Durability & connectivity
- Water rating
- 100 m
- Bluetooth
- BLE 5.3
- On-ring storage
- 7 days
- App
- iOS 18+, Android 10+
In the box
HSRing X3
In the finish and size you chose.
Charging case
Magnetic dock with three stored charges.
USB-C cable
1 m, braided.
Quick start card
Pairing steps and finger guidance.
Care
Rinse after salt or chlorine
Fresh water, then dry the inside before charging.
Avoid hard knocks
Take it off for weightlifting and climbing. Titanium is tough, but the finish can scratch.
Charge weekly
Keeping the battery between 20% and 100% extends its life. The app reminds you at 20%.