Torjalph TJ37 Smart Watch Fitness Tracker
- Screen Size: 1.8 inches
- Compatible phone models: Android 5.0+ and iOS 9.0+
- Battery average life: 7 days
- Gps Geotagging Functionality: GPS Via Smartphone
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A reasonable low-cost option for step counting, sleep tracking and phone notifications, though buyers wanting precise health metrics should look higher up the price range.
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ASIN: B09TR2NNJSModel: TJ37Category: Smartwatches
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Overview
A budget smartwatch with a 1.69-inch touchscreen, IP68 waterproofing and Bluetooth calling, paired through the Da Fit app for Android and iOS.
Health features here, heart rate, blood oxygen, sleep, run through the Da Fit app rather than a proprietary platform, so day-to-day usefulness depends heavily on that app rather than the hardware alone. Magnetic charging and a claimed 5 to 7 days per charge are the standout spec next to pricier trackers that need daily top-ups.
- 1.69-inch full touchscreen with 200+ watch faces
- IP68 waterproof for rain, sweat and handwashing
- 230 mAh battery, magnetic charge, 5-7 days rated life
- 12 sport modes plus heart rate, SpO2 and sleep tracking
Who it's for
Fits a buyer wanting basic fitness and notification tracking on a budget, comfortable relying on a third-party app for setup and watch faces. Not for anyone wanting tight integration with Apple Health or medical-grade accuracy.
Pros and cons
- IP68 rated for rain, sweat and handwashing
- 5 to 7 days claimed battery life with magnetic charging
- Over 200 selectable watch faces via the Da Fit app
- Bluetooth calling and app notifications on the wrist
- Health metrics depend on the third-party Da Fit app rather than a proprietary platform
- Blood pressure and SpO2 readings are not positioned as medical grade
Performance notes
A 230 mAh battery charges magnetically and is rated for 5 to 7 days of use. The 1.69-inch touchscreen runs more than 200 selectable watch faces through the Da Fit app, and the silicone strap is built to resist sweat and dust across 12 tracked sport modes including walking, running, cycling and swimming. Notifications, calls and camera remote control route through the same app over Bluetooth.
Specifications
| Brand | Torjalph |
|---|---|
| Model | TJ37 |
| Dimensions & fit | |
| Screen Size | 1.8 inches |
| Water resistance depth | 4.9 feet |
| Item Weight | 0.09 pounds |
| Item Dimensions | 10.1 × 1.8 × 0.4 inches |
| Item Dimensions D X W X H | 0.4 × 1.8 × 0.4 inches |
| Sim card size | eSIM |
| Capacity & performance | |
| Memory storage capacity | 0.128 GB |
| Battery capacity | 0.35 amps |
| Age Range Description | Adult |
| Power & efficiency | |
| Battery average life | 7 days |
| Battery cell type | Lithium Ion |
| Battery power | 230 mAh |
| Construction & materials | |
| Band material type | Silicone |
| Color | Black |
| Band Color | Black |
| Compatibility & installation | |
| Compatible phone models | Android 5.0+ and iOS 9.0+ |
| Connectivity technology | Bluetooth |
| Compatible devices | Smartphone |
| Human Interface Input | Touchscreen |
| Included components | |
| Unit Count | 1 |
| Warranty & support | |
| Supported Satellite Navigation System | GPS |
| Warranty description | 1 year |
| Warranty type | Limited |
| Other details | |
| Gps Geotagging Functionality | GPS Via Smartphone |
| Display type | LCD |
| Waterproof Rating | IP68 |
| Water resistance level | Waterproof |
| Shape | Rectangular |
| Clasp type | Magnetic |
| Resolution | 240 x 284 |
| Wearable Computer Type | Smart Watch |
| Communication feature | Yes |
| Wireless compability | Bluetooth |
| Operating System | Android, IOS |
| Target Audience | Men, Women |
| Metrics measured | Heart Rate |
| Additional Features | Notifications |
| Sport Type | Badminton, Basketball, Football, Running, Swimming, Walking |
Frequently asked questions
What app does the Torjalph TJ37 pair with?
The Da Fit app, available for both Android and iOS, handles setup, watch faces and notifications.
How waterproof is it?
It carries an IP68 rating, suitable for rain, sweat and handwashing, though it is not marketed for diving.
How long does the battery last?
The listing rates the 230 mAh battery for 5 to 7 days per charge using the included magnetic charger.