Quick answer: In the Noise ColorFit Pro 4 vs boAt Wave Sigma choice, pick the ColorFit Pro 4 if you want the longer claimed battery life (Noise says more than 7 days) and a mature app. Pick the boAt Wave Sigma line if you want a bigger 2.01-inch screen and a lower price. Both are basic trackers, so treat their health numbers as estimates.
Key takeaways
- ColorFit Pro 4: 1.72-inch TFT screen, Bluetooth calling, 100 sports modes, battery claim of 7+ days (Noise spec sheet).
- Wave Sigma: 2.01-inch TFT screen, IP67, 230 mAh battery, up to 5 days claimed (boAt support page).
- boAt now sells this line as the Wave Sigma 3, often for less than the ColorFit Pro 4.
- Research shows wrist heart rate is fairly good at rest but less reliable during intense exercise. Calorie numbers are the weakest.
Noise ColorFit Pro 4 vs boAt Wave Sigma: The Short Version
Both watches sit in the crowded under-₹2,500 smartwatch market in India. Both pair with a phone app, show notifications, take Bluetooth calls and track steps, heart rate, SpO2 and sleep. So the Noise ColorFit Pro 4 vs boAt Wave Sigma decision comes down to a few clear differences: screen size, battery claims, water resistance and price.
This comparison is built from each brand’s official specifications, published research on wrist-worn trackers, and current prices on the brands’ own stores. We have not run our own device tests, so we don’t quote made-up accuracy figures. Where a number appears, it comes from the brand or from a study we link to.
In this article, you’ll learn:
- How the official specs compare, line by line
- What studies say about budget watch accuracy
- Current prices and which model is still on sale
- Who should buy which watch
Official Specs Side by Side
| Feature | Noise ColorFit Pro 4 | boAt Wave Sigma |
|---|---|---|
| Screen | 1.72-inch TFT | 2.01-inch TFT |
| Bluetooth calling | Yes | Yes |
| Sports / activity modes | 100 | 700+ |
| Battery claim | More than 7 days | Up to 5 days (15 days standby) |
| Battery capacity | Not listed on the brand page | 230 mAh |
| Water resistance | Check the listing | IP67 |
| Sensors | Heart rate, SpO2 | Heart rate, SpO2, G-sensor |
| Bluetooth version | Check the listing | 5.2 |
| Built-in GPS | No | Not listed |
Sources: the Noise ColorFit Pro 4 product page and the boAt Wave Sigma support page, both checked on 19 Oct 2026.
Many older reviews online list wrong specs for these watches (for example, a 1.69-inch screen for the Wave Sigma). Go by the brand’s own page before you buy.
Display: Bigger vs More Familiar
Screen size is the most visible difference in the Noise ColorFit Pro 4 vs boAt Wave Sigma match-up. The Wave Sigma’s 2.01-inch screen is the bigger of the two. A larger screen helps if you read stats mid-workout or have weak eyesight. The ColorFit Pro 4’s 1.72-inch screen is smaller but still large for a budget watch.
Both use TFT (LCD-type) panels, not AMOLED. TFT screens are cheaper and usually less vivid, and they can be harder to read in harsh sunlight than AMOLED. If outdoor visibility matters to you, look at AMOLED models in the same budget, such as Noise’s newer ColorFit Pro 5, which Noise lists with a 1.85-inch AMOLED screen.
Battery Life: What the Brands Claim
Battery is where the Noise ColorFit Pro 4 vs boAt Wave Sigma gap is clearest on paper. Noise lists the ColorFit Pro 4 at more than 7 days. boAt lists the Wave Sigma at up to 5 days of working time and 15 days on standby.
Treat both as best-case numbers. Battery claims are usually measured with light settings. Continuous heart rate, frequent notifications, Bluetooth calling and a bright screen all drain the battery faster. If you hate charging, the ColorFit Pro 4 has the stronger claim on paper.
Fitness Tracking: What Research Says About Budget Watches
Neither brand publishes independent accuracy studies for these exact models. But research on wrist-worn trackers in general gives a clear picture of what to expect.
Heart rate
A Stanford study of seven wrist trackers found that six of them measured heart rate within 5 percent. A later study in npj Digital Medicine found wearables were reasonably accurate at rest and during steady effort. Error during activity was about 30% higher on average than at rest. It found no significant difference in accuracy across skin tones, but clear differences between devices.
What this means for you: expect sensible readings while sitting, walking or jogging steadily. Expect lag or odd spikes during sprints, skipping or heavy lifting.
Calories
The same Stanford team found that none of the seven devices measured calories burned well. The best was off by 27% on average. Use calorie numbers to compare one day with another, not to plan meals.
Steps, sleep and SpO2
Step counts are usually fine for daily trends. Sleep stages and SpO2 on budget watches are estimates. They are not medical tests. If you have breathing, heart or sleep problems, use a proper medical device and see a doctor.
Price and Availability (Approx., as of 19 Oct 2026)
| Model | Brand store price (approx.) | Note |
|---|---|---|
| Noise ColorFit Pro 4 | ₹2,199 | Listed on gonoise.com |
| boAt Wave Sigma 3 | ₹1,099–₹1,649 | Current version on boat-lifestyle.com, price varies by colour |
The original Wave Sigma now appears to be replaced by the Wave Sigma 3 on boAt’s site. Specs can change between versions, so check the exact model name before you buy. Prices change often during festive sales, and marketplace prices may differ.
Who Should Buy Which
Here is how the Noise ColorFit Pro 4 vs boAt Wave Sigma choice breaks down by need.
Choose the Noise ColorFit Pro 4 if:
- Battery life matters most (7+ days claimed)
- You want a compact watch for all-day wear
- You already use the NoiseFit app or other Noise gear
Choose the boAt Wave Sigma (3) if:
- You want the biggest screen for the money
- You want an IP67 rating listed clearly on the spec sheet
- Price is your top priority
Skip both if:
- You train by heart rate zones. A chest strap or a higher-end watch will serve you better.
- You need built-in GPS for running pace and distance.
- You want medical-grade health readings. No budget smartwatch offers that.
For general movement goals, the World Health Organization recommends at least 150 minutes of moderate activity a week. Any of these watches can help you track whether you hit that.
How to Check Before You Buy
- Match the model name. “Pro 4”, “Pro 4 Max”, “Pro 4 Alpha” and “Pro 4 GPS” are different watches.
- Read the latest buyer reviews. Look at reviews from the last few months, and focus on comments about strap quality, syncing and after-sales service.
- Buy from the brand store or an authorised seller to keep your warranty valid.
- Check the return window so you can return it if the fit or app doesn’t suit you.
Want a wider comparison of watch types? See our guide on fitness tracker vs smartwatch.
This article is for general information and isn’t medical advice. Smartwatch health readings are estimates, not a diagnosis.
Frequently Asked Questions: Noise ColorFit Pro 4 vs boAt Wave Sigma
Q: Which has better battery life, Noise ColorFit Pro 4 or boAt Wave Sigma?
On paper, the ColorFit Pro 4. Noise claims more than 7 days. boAt claims up to 5 days for the Wave Sigma. Real battery life depends on your settings.
Q: Which has the bigger screen?
The boAt Wave Sigma, with a 2.01-inch TFT screen. The ColorFit Pro 4 has a 1.72-inch TFT screen.
Q: Are these watches accurate for heart rate?
Studies of wrist trackers show good accuracy at rest and steady effort, and more error during intense exercise. Treat both watches as estimates.
Q: Can I swim with the boAt Wave Sigma?
boAt lists it as IP67, which covers dust, sweat and splashes. IP67 isn’t a swim rating, so avoid swimming with it.
Q: Is the boAt Wave Sigma still sold?
boAt’s store now lists the Wave Sigma 3. Check the spec sheet of the exact version before buying.
The Bottom Line
The Noise ColorFit Pro 4 vs boAt Wave Sigma choice is simple once you look at the real specs. Noise wins on claimed battery life. boAt wins on screen size and price. Neither is a precise training tool, and that’s fine for step goals, reminders and basic trends.
Check the brand page, compare today’s price, and pick the one that fits how you’ll actually use it. For more budget wearable guides, follow FitnessGear.in.