Smart ring · Technical specifications
Mere smart ring specs. No lite version.
Every Mere smart ring has the same sensors: light, an ECG electrode, skin conductance and motion, in a titanium alloy shell you’ll forget you’re wearing.
- 50+health metrics
- 12–15days per charge
- 2.6–2.8grams
- 2.8 mmthin
- IP68dust and water
Not on sale yet. Planned price $299, with no data subscription: readings are free for the life of your ring. US launch; ship date not confirmed. Pricing and shipping questions
Sensors
- Optical (PPG)
- Green, red and infrared LEDs, read by photodiodes, sampling your pulse 250 times a second
- Heart rate and HRV
- Green and infrared light
- Blood oxygen
- Red and infrared light
- ECG
- A single-lead electrode across the outside of the ring. Rest a fingertip of your other hand on it for 30 seconds; it records at 500 samples a second
- Electrodermal activity
- A sensor for small changes in your skin’s conductance
- Motion
- Three-axis accelerometer, for movement, activity and sleep
Battery and charging
- Battery life
- 12 to 15 days per charge, depending on your settings and use
- Charging time
- About 20 to 80 minutes
- Charger
- A magnetic charging case with its own battery. Magnets line up the two contacts inside the ring
Size and weight
- Weight
- About 2.6 to 2.8 grams
- Thickness
- About 2.8 mm
- Width
- About 8 mm
- Inner diameter
- About 16.5 to 22.3 mm
- Sizes
- Seven sizes, about 16.5 to 22.3 mm inside. Smart-ring sizes run differently from jewelry sizes, so measure with the sizer in the Mere app. Aim for snug: a loose ring lets light slip past the sensors
Materials and finishes
- Edition
- One. Every Mere Ring has the same sensors; there’s no lite version
- Shell
- Engraved titanium alloy
- Inside
- A smooth liner over the sensors
- Finishes
- Silver-tone, rose gold-tone and black
- Wear
- Like any titanium, it picks up fine scratches with everyday wear
Water and dust
- Rating
- IP68
- Everyday
- Wear it for hand-washing, showers and workouts. Take it off for saunas, hot tubs, diving and harsh cleaners
Connectivity
- Wireless
- Bluetooth Low Energy
- App
- Works with iPhone through the Mere app
- Quiet by design
- No screen, no vibration, no notifications
In the box
- Included
- Mere Ring, magnetic charging case, charging cable and a quick-start guide
Certifications
- What we’ll publish
- Before the Mere Ring ships, we’ll publish each certification with what was tested: FCC for the Bluetooth radio, IP68 for dust and water, UN 38.3 for battery safety and ISO 10993 for skin contact
Specifications describe pre-production hardware and may change before launch. Mere is a wellness product. It does not diagnose, treat, cure or prevent any disease.
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