Smartring Colmi R12 22.4MM 13 (black)

Colmi R12 Smart Ring

The Colmi R12 is a smart ring with an LED display, health-monitoring sensors and gesture controls. It monitors heart rate, blood oxygen levels, sleep and physical activity around the clock. The ring supports multiple sports modes and can remotely control a smartphone. Its 1 ATM water resistance makes it suitable for wearing while washing, bathing and swimming. Battery life is up to 5 days, with up to 15 days in standby. The included charging base makes recharging convenient.

Easy-to-read display

The built-in LED display lets you check key information directly on the ring without reaching for your phone. It shows the time, step count, battery level and current heart rate, which is useful when using a smartphone is inconvenient, such as while cycling or exercising.

24/7 health and activity monitoring

Biological sensors monitor heart rate, blood oxygen levels (SpO₂), sleep and stress. Heart rate is measured in real time. Sleep quality is assessed by sleep phase, including light sleep, deep sleep and awake periods, with data presented in the app as graphs. This information helps you track habits and monitor wellbeing and recovery.

Sports modes and exercise tracking

The ring supports several workout modes, including walking, running, cycling and swimming. During activity, it records heart rate, distance, steps, exercise duration and calories burned. Data syncs with the app, where daily, weekly and monthly statistics are available.

Gesture controls and practical features

Use hand gestures to control a smartphone, including scrolling through apps such as TikTok or remotely taking a photo. This is useful for selfies and video recording without touching the phone screen. The ring can also count repetitions manually, for example during prayer, affirmations or exercise. Press the button on the ring to record each event; the data is saved in the app.

Durable design

The Colmi R12 has a 1 ATM water-resistance rating and can be worn while washing hands, bathing and swimming in a pool or the sea. Its rechargeable battery provides approximately 3–5 days of operation, depending on use, and up to 15 days in standby. The charging base and USB-C cable are included.

Specifications

• Manufacturer: Colmi
• Model: R12
• Size: 13
• Inner diameter: 22.4 mm
• Colour: Black
• Display information: Battery level, time, steps and heart rate
• Materials: Stainless steel and epoxy resin
• Weight: 4.7 g
• Compatible operating systems: Android 4.4 and later; iOS 8.0 and later; HarmonyOS
• App: QRing
• Water resistance: 1 ATM
• Updates: OTA
• App languages: Danish, Ukrainian, Russian, Croatian, Hungarian, Hindi, Indonesian, Turkish, Hebrew, Greek, German, Italian, Latvian, Czech, Slovak, Slovenian, Japanese, French, Polish, Thai, Estonian, Swedish, Lithuanian, Simplified Chinese, Traditional Chinese, Romanian, English, Dutch, Portuguese, Spanish, Vietnamese, Arabic, Korean and Malay

Hardware

• Chipset: REALTEK RTL8762E
• Flash memory: ROM 512 Kb
• Heart-rate sensor: Vcare VC30F
• G-sensor: ST LI2DOC
• Bluetooth: 5.0
• Battery type: Lithium-polymer
• Battery capacity: 18 mAh
• Charging: Charging base and USB-C cable
• Charging cycles: More than 300
• Charging time: Approximately 1 hour
• Operating time: 3–5 days

App functions

• Activity, calories, steps and distance in kilometres
• Sleep, heart rate, sports modes and workout records
• Heart-rate variability (HRV), blood oxygen and stress monitoring
• Daily tasbih (prayer counting)
• Gesture controls for music, short videos and e-books
• Games: Jump, Fruit Rotation, Pixel Bird, Robot, Bounce, Battle Royale and Circle to Fight Monsters
• Find ring, take photos, theme styles and unit formats
• Health monitoring: 24-hour heart-rate measurement, SpO₂ detection, daytime stress and scheduled HRV monitoring
• Low-battery notifications, software updates and system settings
• Display settings: on/off, wear time, screen time and brightness adjustment
• Background activity protection guide and frequently asked questions (FAQ)

Included

• Colmi R12 smart ring
• Charging base
• USB-C to USB-C cable
• User manual