Detailed comparison and review of OPPO Watch Free and Amazfit GTR 4. With our comprehensive overview, you can simply compare size, design, functions, battery capacities, but also other key features of both smartwatches and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the watch that best fits your needs and expectations.
| GENERAL | OPPO Watch Free | Amazfit GTR 4 |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Operating System | - | Zepp OS |
| Supported Host Device OS | iOS 10 or later, Android 6.0 (Marshmallow) or later | iOS 12 or later, Android 7.0 (Nougat) or later |
| Activity/Sport | Indoor running, indoor walking, elliptical, 5-min workouts, fat burn running, outdoor walking, outdoor running, indoor rowing, endurance running, interval running, jogging | Multisport |
| Wearing Style | Watch style | Watch style |
| Audio Input | - | Microphone |
| Audio Output | - | Speaker |
| Body Details | Case only: 20.9 g | With band: 34 g |
| Body Material | Glass fibre reinforced polycarbonate, PA + GF bottom case | Aluminium alloy frame |
| Protection | Water-resistant | Water-resistant |
| Colours | Black | - |
| Clock Display | Yes | Yes |
| FEATURES | OPPO Watch Free | Amazfit GTR 4 |
|---|
| Sensors | Ambient light sensor, SpO2 sensor, 6-axis accelerometer, optical heart sensor, blood oxygen sensor, gyroscope | Accelerometer, ambient light sensor, geomagnetic sensor, barometric altimeter, gyroscope, BioTracker PPG 4.0 biometric sensor |
|---|---|---|
| Tracking Data | Distance, time, calories burned, activity, sleep activity, heart rate, steps taken, blood oxygen saturation, heart rate variability, snoring | Time, calories burned, activity, sleep activity, heart rate, steps taken, blood oxygen saturation, sleep stages, stress level, menstrual cycle, personal activity intelligence (PAI), recovery time, training load, sleep quality score, nap, sleep breathing quality |
| Modes | 100+ Workout modes | 154 sports modes |
| Goal Setting | Yes | Yes |
| Features | Call handling, find phone function, inactivity alert, alarm, timer, music playback control, weather information, AI smart watch face, sleep disturbance analysis | Strength training guidance, camera remote control, find phone function, answering a call, VO2 max, making a call, Find my Device, breathing training function, store & play music, sunrise/sunset times, auto pause, auto lap, realtime location tracking, music playback control, weather information, PeakBeats workout status algorithm, ExerSense algorithm, Dual-band navigation, linear motor, Virtual Pacer, track run mode, smart trajectory correction, route file import |
| Notifications | SMS, incoming calls | SMS, incoming calls, applications, high and low heart rate, low blood-oxygen, high stress level |
| Vibrating Alert | Yes | Yes |
| Feedback Type | Vibration alert, visual interface | Audio alert, vibration alert, visual interface |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | - | Alexa built-in |
| IoT Voice Controlled | - | Direct |
| CONNECTIVITY | OPPO Watch Free | Amazfit GTR 4 |
|---|
| Wireless Interface | Bluetooth 5.0 BLE | Wi-Fi, Bluetooth 5.0 BLE |
|---|
| DISPLAY | OPPO Watch Free | Amazfit GTR 4 |
|---|
| Type | AMOLED - colour | AMOLED - colour |
|---|---|---|
| Resolution | 456 x 280 pixels | 466 x 466 pixels |
| Screen Size | 1.64" | 1.43" |
| Pixel Density | 326 ppi | 326 ppi |
| Colour Depth | 24-bit (16.7 million colours) | - |
| Screen Protection | 2.5D curved glass | Fingerprint-resistant coating, tempered glass, anti-glare bezel |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | OPPO Watch Free | Amazfit GTR 4 |
|---|
| Type | Touch sensitive screen | Touch sensitive screen, push buttons |
|---|
| CASE | OPPO Watch Free | Amazfit GTR 4 |
|---|
| Case Shape | Rectangular | Circular |
|---|---|---|
| Case Back | - | Polycarbonate |
| Case Details | - | Aluminium alloy |
| BAND | OPPO Watch Free | Amazfit GTR 4 |
|---|
| Band Type | Strap | Strap |
|---|---|---|
| Band Width | 19 mm | 22 mm |
| Fits Wrist with Circumference | 130-205 mm | 150-215 mm |
| Changeable | Yes | Yes |
| Clasp Type | Buckle | Pin buckle |
| Band Material | Silicone | Fluoroelastomer |
| Band Colour | - | Superspeed black | Vintage brown leather |
| STORAGE | OPPO Watch Free | Amazfit GTR 4 |
|---|
| User Memory | - | 2.3 GB |
|---|
| BATTERY | OPPO Watch Free | Amazfit GTR 4 |
|---|
| Technology | Lithium Ion | - |
|---|---|---|
| Capacity | 235 mAh | 475 mAh |
| Battery Life | 14 day(s) | - |
| Battery Life Details | Typical usage - up to 14 days | Typical usage - up to 14 days Battery Saver Watch Mode - up to 24 days Clock - up to 50 days Heavy usage - up to 7 days Accurate mode (with GPS) - up to 25 hours GPS mode - up to 44 hours Power saving mode (with GPS) - up to 52 hours |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | - | 2 hour(s) |
| MISCELLANEOUS | OPPO Watch Free | Amazfit GTR 4 |
|---|
| Included Accessories | Magnetic charging dock | Magnetic charging cable |
|---|---|---|
| Preloaded Software | - | To Do List, Games, Stopwatch, Calendar, World clock, Alarm Clock, Reminders, Timer, Compass, Countdown timer |
| Max Depth of Water Resistance | 50 m | 50 m |
| Max Operating Temperature | - | 45 °C |
| Min Operating Temperature | - | 0 °C |
| Manufacturer Model Number | OWWE201 | - |
| Warranty | 2-year warranty | 1-year warranty |
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