Fire-Boltt Ultron vs Huami Amazfit Stratos 3 comparison
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| key specs |
| Compatible OS | Android, iOS | - |
| Strap Material | Silicone | Silicone |
| Dial Shape | Round | Round |
| Display Type | Super AMOLED | - |
| Ideal For | Unisex | - |
| general |
| Brand | Fire-Boltt | Huami |
| Model | Ultron | Amazfit Stratos 3 |
| Release date | January 6, 2022 | August 27, 2019 |
| Model Name | Ultron | Stratos 3 |
| Dial Colour | Silver | - |
| Dial Shape | Round | Round |
| Strap Material | Silicone | Silicone |
| Size | Regular | - |
| Touchscreen | Yes | Yes |
| Interchangeable Strap | Yes | - |
| Water Resistant | 3ATM | 5ATM |
| Dial Material | Stainless Steel | Stainless Steel |
| Ideal For | Unisex | - |
| Water Resistance Depth | - | 50 Meters |
| Usage | - | For Sports |
| product details |
| Compatible Device | Android, iPhone | Android 5.0 or iOS 10.0 and above |
| Notification | Yes | Yes |
| Rechargeable Battery | Yes | - |
| Sensor | - | BioTracker PPG Bio-Tracking optical sensor, 6-axis acceleration sensor, 3-axis geomagnetic sensor, Air pressure sensor |
| Notification Type | - | Calls, Messages, App Alerts |
| Battery Type | - | Lithium-ion polymer battery |
| Battery Life | - | 7 days in smart mode |
| Charge Time | - | 2.5 hours |
| connectivity features |
| Call Function | Yes | - |
| Bluetooth | Bluetooth | Yes |
| Bluetooth Version | 5 | 5.0 |
| Operating Range | 10m | - |
| Call Features | Incoming Call Vibrate Alert | - |
| Wi-Fi | - | Yes |
| GPS | - | Yes |
| platform and storage features |
| Compatible Operating System | Android, iOS | - |
| Operating System | - | Amazfit OS |
| Number of Cores | - | dual-core |
| RAM | - | 512MB |
| Processor Speed | - | 1200 |
| Internal Memory | - | 2GB |
| camera and display features |
| Display Resolution | 390x390 | 320x320 |
| Display Type | Super AMOLED | - |
| Backlight Display | Yes | - |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Altimeter | No | - |
| Calendar | Yes | - |
| Alarm Clock | Yes | Yes |
| Chronograph | No | - |
| Date & Time Display | Yes | - |
| Number of Buttons | 1 | 4 |
| Other Fitness Features | SPO2, Heart Rate Tracking, Always-on Display, 14 sports modes,Magic Crown Rotary Button | 80 Sports Modes |
| dimensions |
| Thickness | - | 13.4 mm |
| Diameter | - | 48.6mm |
| Weight (g) | - | 40.40 |
| audio and video features |
| Audio Features | - | Standalone Music Playback |
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