Xloop · Specifications
Xloop — Ultra-Slim Smart Ring by Alexi.
Meet Xloop. An ultra-slim smart ring designed to bring advanced health tracking into a remarkably compact form. At just 6.08 mm wide and 2.3 mm thick, with a weight of approximately 2.7 grams in size 10, Xloop combines discreet everyday design with heart-rate monitoring, HRV, blood oxygen tracking, skin-temperature trends, sleep analysis, and daily activity insights. Connected to the Alexi app, Xloop helps transform personal health measurements into clear visualizations and meaningful long-term trends.
Size and weight
- Width
- 6.08 mm
- Thickness
- 2.30 mm
- Weight
- Approximately 2.7 g (size 10; varies by size)
- Sizes
- US 6–13
Sensors
- Heart rate and blood oxygen
- Optical sensor with dual photodiodes
- Motion
- 3-axis motion sensor
- Temperature
- Skin-temperature sensing
Health data
- Heart
- Heart rate, heart-rate variability (HRV)
- Blood oxygen
- SpO2
- Temperature
- Skin-temperature trends
- Sleep
- Sleep duration, stages and analysis
- Activity
- Steps, daily activity and calories
Battery and charging
- Battery capacity
- 13–16 mAh depending on size(provisional)
- Battery life
- 5–7 days of typical use
- Standby
- Up to 15 days
- Charging
- Magnetic, approximately 90 minutes
Connectivity and durability
- Connectivity
- Bluetooth Low Energy 5.4
- Water resistance
- 5 ATM
- Material
- Being confirmed (stainless steel listed on the reference platform)(provisional)
- App
- Alexi app for iPhone and Android, included
Sizes and inner diameters
- US 6
- 16.5 mm
- US 7
- 17.3 mm
- US 8
- 18.1 mm
- US 9
- 18.9 mm
- US 10
- 19.8 mm
- US 11
- 20.6 mm
- US 12
- 21.4 mm
- US 13
- 22.2 mm
In the box
- Xloop smart ring
- Magnetic charger
- Charging cable
- Quick start guide
Confirmed and provisional values
Values marked "provisional" come from the reference hardware platform and are still being confirmed for the final Xloop. All other values are confirmed.
Questions about Xloop specifications
How big is Xloop?
Xloop is 6.08 mm wide and 2.30 mm thick, and weighs approximately 2.7 g in size 10.
What does Xloop track?
Heart rate, HRV, blood oxygen, skin-temperature trends, sleep and daily activity, shown in the Alexi app.
How long does the battery last?
5–7 days of typical use and up to 15 days on standby. A magnetic charge takes about 90 minutes.
Is Xloop waterproof?
Xloop is rated 5 ATM water resistant.
Which sizes are available?
US sizes 6 to 13. See the sizing guide for the inner diameter of each size.
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