COLMI P28 Plus vs P71: Which One Should You Buy in Bangladesh?

COLMI has become one of the most searched smartwatch brands in Bangladesh. The reason is simple. They deliver real features at honest prices.

Two models keep coming up. The COLMI P28 Plus and the COLMI P71. Both have Bluetooth calling. Both track health. Both look great on the wrist.

But they are not the same watch. The differences matter. This review breaks everything down so you can decide fast.

If you want to compare more options across price ranges, read our full guide: Best Smartwatch in Bangladesh 2026: Ultimate Buyer’s Guide. This article focuses specifically on the COLMI P28 Plus vs P71 comparison for Bangladeshi buyers.

Who Is COLMI? Why Bangladesh Loves This Brand

COLMI is a Chinese smartwatch brand known for affordable and feature-rich devices. They sit in the same market as Haylou, Fire Boltt, and Noise. But COLMI often delivers better display quality for the price.

In Bangladesh, COLMI watches have gained popularity through word of mouth. Students, office workers, and fitness fans all wear them.

The P series is their most popular lineup. It focuses on everyday use with Bluetooth calling and health monitoring. The P28 Plus and P71 are the two most compared models right now.

1. Design and Build Quality

Both watches have a square design. Both look modern and clean on the wrist. Neither looks cheap at first glance.

The COLMI P28 Plus measures 43.5 x 36 x 11mm and weighs around 50g. It has a 2.5D curved screen and a zinc alloy frame. The silicone strap feels comfortable all day.

The COLMI P71 is slightly larger at 45 x 49 x 11.5mm. It also uses zinc alloy but comes with both a silicone and a metal strap option. The metal strap version looks significantly more premium.

For style-conscious buyers, the P71 wins this round. The extra size and metal strap option give it a more expensive appearance.

2. Display: Bigger Makes a Real Difference

The display is where the P71 clearly pulls ahead. A 1.9-inch screen feels noticeably bigger and easier to read. Text, time, and notifications are all clearer.

The P28 Plus has a 1.69-inch screen. That is still a good size. It uses a 240 x 280 pixel TFT display. Colors look decent. Outdoor visibility is acceptable but not great in direct sunlight.

The P71 upgrades to a larger HD IPS panel. Brightness is stronger. Colors pop more. For Bangladesh’s bright outdoor environments, this matters every single day.

Both watches support 100-plus watch faces. You can also set custom photo dials through the companion app.

3. Health Monitoring Features

Both watches offer essential health-monitoring features. Heart rate, SpO2, sleep tracking, and blood pressure are all included on both models.

The P71 adds stress monitoring. During HSC exam season or a busy work month, this feature is genuinely useful. You can see how your stress levels change throughout the day.

For general daily use, both watches perform similarly in health tracking. Neither is a medical device. But they give you a useful picture of your overall health trends every day.

4. Sports Modes: 28 vs 106

This is the biggest gap between the two watches. The P28 Plus tracks 28 sports modes. Walking, running, cycling, football, badminton, and more. That covers daily student and casual fitness use completely.

The P71 tracks 106 sports modes. If you play cricket, go to the gym regularly, cycle on weekends, or practice yoga, you will find a dedicated mode for almost every activity.

For casual users, 28 modes are more than enough. For anyone serious about fitness tracking, 106 modes on the P71 are a clear advantage.

5. Bluetooth Calling: Both Watches Support It

Both watches include built-in speakers and microphones. You can answer, make, and hang up calls directly from the watch. Your phone stays in your pocket.

This is one of the most used features in Bangladesh. When you are cooking, on a rickshaw, or in the middle of prayer time, being able to answer from the wrist is genuinely convenient.

Call quality on both models is clear enough for everyday conversations. Loud environments can slightly degrade audio quality on both. Neither watch performs miracles in a busy street.

This is a true tie. You get Bluetooth calling on both watches, regardless of which model you choose.

6. Waterproofing: IP67 vs IP68

IP67 on the P28 Plus means it handles rain, sweat, and hand washing without problems. Bangladeshi monsoon season is no issue. But you should not submerge it in water.

IP68 on the P71 is the higher rating. It can handle submersion up to 1.5 meters for 30 minutes. Swim tracking becomes a possibility. Accidental drops in water are not a worry.

For most everyday users in Bangladesh, IP67 is more than enough. But if you swim or want extra peace of mind during the monsoon, IP68 on the P71 wins this round.

7. Battery Life: How Long Do They Last?

This is the one area where the P28 Plus wins. It runs 5 to 7 days on a single charge with normal use. Bluetooth calling and constant health monitoring reduce that figure.

The P71 lasts 3 to 5 days. Its larger screen and additional features draw more power. With heavy use including frequent calls, it can drop to 3 days.

For students with load shedding at home, the P28 Plus’s longer battery life is a practical advantage. You charge it less often.

8. App and Connectivity

Both watches use the Da Fit app. It is available on Google Play and the Apple App Store. Setup takes under five minutes on any Android or iOS phone.

The Da Fit app shows your steps, sleep data, heart rate history, and workout logs. You can set alarms, change watch faces, and manage notifications through the app.

Both watches use Bluetooth 5.0. Connection is stable within 10 meters. Reconnecting after distance is smooth and fast on both models.

Neither watch has built-in GPS. You need your phone nearby for GPS tracking during outdoor runs. This is normal at this price range.

9. Price in Bangladesh: What You Pay for Each

The COLMI P28 Plus is the more affordable option. It sits comfortably under ৳2,000 for most sellers in Bangladesh. That makes it one of the best value smartwatches with Bluetooth calling at this price.

The COLMI P71 costs a bit more. You pay for the larger display, 106 sports modes, IP68 rating, and stress monitoring. The upgrade is worth the price difference for most buyers who use the watch daily.

Both models are available at Gadgeterians with verified specifications and Bangladesh delivery. No counterfeit risk. No fake capacity claims.

COLMI P28 Plus vs P71: Full Comparison Table

Which One Should You Buy? A Guide by User Type

The right choice depends on what you actually need. Use this section to pick fast.

Honest Pros and Cons

Frequently Asked Questions

Final Verdict: Which COLMI Should You Buy?

If your budget is tight, get the COLMI P28 Plus. It delivers everything you need. Calling, health tracking, decent battery life, and a good display for under ৳2,000.

If you can stretch your budget a little, get the COLMI P71. The larger screen alone makes daily use noticeably better. Add 106 sports modes and IP68 waterproofing. It earns every extra taka.

Both watches are genuine value for money. COLMI has earned its reputation in Bangladesh for a reason. Either choice will serve you well for two or more years of daily use.