Bluetooth Call Smartwatch | Heart Rate Blood Oxygen Blood Pressure Monitor

Bluetooth Call Smartwatch — Heart Rate, SpO2 & Blood Pressure on Your Wrist

Most smartwatches notify you of calls. This one lets you take them. The P45L31 has a built-in speaker and microphone, so you can answer and make calls directly from your wrist without touching your phone — useful when your phone is in a bag, across the room, or when you’re mid-workout and don’t want to stop. That’s the feature that separates this watch from standard fitness trackers, and it’s worth understanding what it means in practice: you need your phone within Bluetooth range (typically 10 metres), but once connected, the call audio routes through the watch. The health monitoring side covers the three metrics that matter most for daily wellness tracking: heart rate (continuous, 24/7), blood oxygen saturation (SpO2), and blood pressure. These three together give you a more complete picture of cardiovascular health than heart rate alone. Multiple sport modes track workouts with dedicated metrics. Data syncs to the companion app on iOS or Android. One colour: Blue.

Product Details

• Model: P45L31
• Color: Blue (single color)
• Bluetooth Calling: Built-in speaker and microphone — make and receive calls directly from wrist, no phone in hand required
• Heart Rate: 24/7 continuous optical monitoring — real-time display, trend tracking, workout zones
• SpO2: Blood oxygen saturation — on-demand measurement, useful for altitude, respiratory health, recovery monitoring
• Blood Pressure: Wrist-based monitoring — trend tracking over time (note: not a medical device, for wellness reference only)
• Sport Modes: Multiple exercise modes with dedicated tracking metrics
• Notifications: Calls, texts, app alerts displayed on screen when phone is connected
• Compatibility: iOS and Android via companion app
• Weight: 178g
• Price: $77.36

Bluetooth Calling: What It Actually Means

Bluetooth calling on a smartwatch works differently from what most people expect. The watch pairs with your phone over Bluetooth — the same connection used for notifications. When a call comes in, the audio routes through the watch’s speaker and microphone instead of the phone. You answer on the watch, speak normally, and the other person hears you through the watch mic. This works well in quiet environments and moderately well in moderate noise. It’s most useful in three situations: when your phone is in a pocket or bag and pulling it out is inconvenient; when you’re exercising and want to keep moving; and when you’re driving and want hands-free operation without a car system. The Bluetooth range is typically 10 metres — the phone needs to stay within that range for the call to work. You can also initiate calls from the watch by accessing your phone’s contacts through the watch interface. This is a genuinely useful feature that most fitness trackers and many smartwatches in this price range don’t include.

Health Monitoring: Three Metrics Together

Heart rate alone tells you how fast your heart is beating. Add SpO2 and you can see how efficiently your blood is carrying oxygen — a drop in SpO2 during sleep can indicate breathing disruption, and low readings during exercise can indicate overexertion. Add blood pressure and you have a third dimension: how hard your heart is working to push blood through your vessels. Wrist-based blood pressure monitoring is not clinically accurate in the way a cuff-based device is — this is important to understand. What it provides is trend data: whether your readings are generally stable, trending up, or trending down over days and weeks. For wellness tracking and early awareness, this is useful. For medical diagnosis or medication management, a clinical device is required. Used correctly — as a wellness reference tool rather than a medical instrument — having all three metrics tracked continuously and automatically is genuinely valuable for understanding how lifestyle factors like sleep, exercise, stress, and diet affect your cardiovascular health day to day.

Who This Watch Is For

• People who take a lot of calls: If you’re frequently on the phone and want the option to answer without picking up your phone, the built-in speaker and mic make this practical for daily use
• Health-conscious users: The combination of heart rate, SpO2, and blood pressure gives a more complete cardiovascular picture than heart rate alone — useful for anyone tracking wellness trends over time
• Active users: Multiple sport modes with dedicated metrics cover gym workouts, running, cycling, and other activities — data syncs to the app for review after sessions
• Everyday wearers: At 178g with a standard watch form factor, it’s comfortable for all-day wear including overnight sleep tracking

Frequently Asked Questions

• Can I make calls without my phone nearby? No — the watch routes calls through your phone’s cellular connection via Bluetooth. Your phone needs to be within approximately 10 metres and connected.
• Is the blood pressure monitoring medically accurate? No — wrist-based optical blood pressure monitoring provides wellness trend data, not clinical measurements. Do not use for medical diagnosis or medication decisions.
• What phones does it work with? iOS (iPhone) and Android smartphones via the companion app. Check app store compatibility for your specific phone model.
• Does it track sleep? Yes — automatic sleep detection with heart rate and SpO2 monitoring during sleep.
• How long does the battery last? Battery life varies with usage — Bluetooth calling and continuous health monitoring reduce battery duration. Typical use: several days per charge.

Product Images

Package Includes: 1 × P45L31 Bluetooth Call Smartwatch, 1 × Charging Cable, 1 × User Manual