COLMI R02 Smart Ring — Health & Sleep Tracker with Charging Case | Perfect Tech Gift for Men

The gift he'd never buy himself — but won't want to take off.

He's into tech. He appreciates things that are well-made and actually useful. But he'd never splash out on something like this for himself. That's where you come in. The COLMI R02 Smart Ring is the kind of gift that makes people stop and say, "where did you find this?" — sleek, smart, and genuinely impressive.

What It Tracks

• Heart rate, around the clock. Continuous 24/7 monitoring keeps tabs on his cardiovascular health — no effort required.
• Sleep quality with a morning score. He'll wake up knowing exactly how well he slept and why he feels the way he does.
• Blood oxygen (SpO2) levels. A quiet but powerful insight into how his body is performing day to day.
• Steps and calories burned. Effortless activity tracking — no need to think about it, it just works.
• Stress monitoring. Helps him spot when he needs to slow down, before his body forces him to.
• 5ATM waterproof. Swimming, showering, surfing — it goes everywhere he does, no questions asked.

Why Men Love It

• ✔ No subscription fees. Ever. Pay once, use forever. No hidden costs, no monthly charges.
• ✔ Works with iPhone and Android. Whatever he's on, it connects seamlessly.
• ✔ Up to 39 days battery life with the included charging case. Charge it less than his phone.
• ✔ Looks like a ring, not a gadget. Minimalist, premium design that works with any outfit — gym kit or suit.
• ✔ Available in multiple sizes. A proper fit for every hand.

Getting the Right Size

Not sure of his size? Wrap a small piece of string around his finger, mark where it meets, then measure the length in millimetres — that's his circumference. Use our size guide to find the right fit. If he's between sizes, always size up. Still not sure? Drop us a message at support@smartergifts.store and we'll help you get it right.

📏 SIZE GUIDE — COLMI R02 Smart Ring

Ring Size | Diameter | Circumference | Best For
Size 7    | 17.3 mm  | 54.4 mm       | Slim fingers
Size 8    | 18.2 mm  | 57.2 mm       | Most popular ⭐
Size 9    | 19.0 mm  | 59.7 mm       | Most popular ⭐
Size 10   | 19.8 mm  | 62.1 mm       | Wider fingers
Size 11   | 20.6 mm  | 64.7 mm       | Wider fingers
Size 12   | 21.4 mm  | 67.2 mm       | Wider fingers

Between sizes? Always size up — a slightly loose ring is far more comfortable than one that's too tight. Fingers also swell slightly at night, so a ring that fits perfectly during the day may feel tight during sleep tracking.

HOW TO MEASURE AT HOME

1. Wrap a thin strip of paper or string around the finger you plan to wear it on
2. Mark where the end meets and measure the length in millimetres — this is your circumference
3. Match your measurement to the circumference column above to find your size
4. Still unsure? Email us at support@smartergifts.store and we'll help you find the perfect fit

Order With Confidence

• 🚚 Free UK shipping on every order — no minimum spend.
• ↩ 30-day hassle-free returns. Changed your mind? No problem.
• 🔒 Secure checkout. Your payment details are always protected.
• 📦 Dispatched within 1–3 business days. Order today, on its way shortly.

Some gifts get forgotten. This one gets worn every single day.

Please note: The COLMI R02 is not a medical device. All health data is intended for general wellness purposes only and should not be used for clinical diagnosis or medical decisions.