Introducing Loop Ultra

Loop Ultra is the premium ring in the Alexi family. It keeps everything people love about Loop — quiet, continuous health tracking in a piece you actually want to wear — and adds a living display in the band, gesture control, Wi-Fi and a dedicated wireless charging dock. It is the most capable ring we have made.

Everything Loop measures, plus a ring that can show you and respond to you.

At a glance

• Price300 in your local currency (USD, EUR, GBP, CHF, CAD or AUD)
• FinishesBlack, Silver and Gold
• SizesUS 6 to 13
• Band8.5 × 3 mm
• Displayintegrated into the band
• Controlsgesture control and app control
• ConnectivityWi-Fi
• Battery20 mAh, up to 4 days
• Chargingwireless dock, about 1 hour
• Water resistance5 ATM

A display set into the band

The first thing you notice about Loop Ultra is the light. A display integrated into the band can show information such as the time and your steps at a glance, without reaching for your phone. When it is off, it disappears into the ring and Loop Ultra looks like a piece of jewellery again.

Gesture control

Loop Ultra adds gesture control alongside control from the app. It is designed for small, natural interactions — the kind of thing you can do without breaking the flow of what you are doing.

Wi-Fi and the app

Loop Ultra adds Wi-Fi connectivity and pairs with the free Alexi app on iOS and Android. As with Loop, there is no subscription: your purchase includes the app and its health features.

Health and fitness tracking

Loop Ultra tracks heart rate, blood oxygen, stress, sleep and mood around the clock. For movement it records steps, speed, calories and distance, and supports multiple sport modes. The data is collected passively and continuously in the background — you wear the ring, and the picture builds itself.

Sleep

Because it is a ring, Loop Ultra is easy to keep on overnight, which is what makes sleep tracking useful. Your nights are recorded alongside your heart rate and blood oxygen so you can see how rest and recovery connect.

Stress and mood

Stress and mood tracking help you notice patterns over the day and over the week — what lifts you, what drains you, and when you need to slow down.

Wireless charging dock

Loop Ultra charges wirelessly on its own dock. Set it down and it is ready again in about an hour. A 20 mAh battery gives up to 4 days of use, and the extra power is what makes the display and gesture control possible.

5 ATM water resistance

Loop Ultra is rated 5 ATM for water resistance — a step up from Loop's IP67 — so washing your hands, rain and everyday water exposure are part of normal wear.

Three finishes

Like Loop, Loop Ultra comes in Black, Silver and Gold. Black is the most graphic and lets the display glow stand out; Silver is clean and classic; Gold is warm and luxurious.

Loop or Loop Ultra?

Choose Loop if you want the lightest, longest-lasting experience: 5 to 10 days of battery, a titanium frame with anti-fingerprint DLC finish, AI sleep and body-clock analysis, CE/FCC/RoHS certification, for 200.

Choose Loop Ultra if you want more from the ring itself: a display in the band, gesture control, Wi-Fi, wireless dock charging and 5 ATM water resistance, for 300 — with up to 4 days of battery.

Size, care and protection

Loop Ultra comes in US sizes 6 to 13. Measure at the end of the day for the most accurate fit; our sizing page has a printable guide. Loop Care for Loop Ultra adds one free replacement ring per year, including accidental damage, for 100 per year (shipping not included).

From Lugano

Alexi is a Swiss technology company based in Lugano, Switzerland. Loop Ultra is a wellness device rather than a medical device: it is designed to help you understand your day, your rest and your habits.

Loop Ultra is available now in Black, Silver and Gold.

A day with Loop Ultra

Morning: the band can show you what you need at a glance, while the app holds the full story of your night — sleep stages, heart rate and recovery. Daytime: Ultra tracks your heart, steps and activity like Loop, and gesture control and the in-band display let you interact with the ring itself. Evening: drop it on the wireless dock, and about an hour later it is ready again.

Display and gestures

The display is what makes Ultra feel different. Instead of always reaching for your phone, the ring can show information directly in the band. Gesture control lets you respond to it with simple finger movements. Together they turn a passive tracker into a ring you can actually use.

Charging and battery

Ultra charges wirelessly on its dock in about one hour and lasts up to around 4 days per charge. The richer feature set — display, gestures and Wi-Fi — is why its battery life is shorter than Loop's 5 to 10 days. A good routine is to charge it while you shower or get ready in the morning.

Water resistance

Ultra is rated 5 ATM, a step up from Loop's IP67. That makes it comfortable to keep on for hand-washing, showers and everyday water contact.

Getting accurate readings

• Choose a snug fitfirm enough not to spin, loose enough to pass your knuckle.
• Keep the inner sensors clean and against the skin.
• Wear it overnight consistently so the app learns your normal.
• Tattoos and darker skin tones can affect optical sensors on any wearable.

Loop Care for Ultra

Loop Care for Ultra costs 100 per year and covers one free replacement per year, including accidental damage. Shipping is not included in the plan price.

Loop or Loop Ultra?

Choose Loop if you want the lightest, longest-lasting health ring at 200. Choose Ultra at 300 if you want a display in the band, gesture control, Wi-Fi, wireless dock charging and 5 ATM water resistance. Both share the free app, the three finishes and US sizes 6 to 13.

Frequently asked

Is there a subscription? No. The Alexi app is free, with no monthly fees.

Which phones does it work with? iOS and Android, with Apple Health integration on iPhone.

Does Ultra support NFC payments? No. Alexi rings do not support NFC payments.

Loop Ultra is a wellness product, not a medical device.