The WITHit Giga Smartwatch presents a large, vibrant 2.04-inch high-definition AMOLED touchscreen—with a resolution of 386 × 448 pixels—that fills its face and offers easily readable visuals and customizable watch faces. The case is aluminum (or ABS/aluminum blend depending on source) and the handset comes with a quick-release silicone band for comfort and interchangeability. Designed for modern wearers who want connected features and style on a budget, the Giga supports both Android 5.0+ and iOS 9.0+ through the WITHit Smartwatch App, enabling smartphone notifications, Bluetooth calling, music controls, and watch face customization.

In terms of health and activity tracking, this smartwatch offers step counting, heart-rate monitoring, blood oxygen (SpO₂) tracking, sleep tracking, and women’s health/menstrual cycle tracking. It also supports general smartwatch features such as incoming call handling, notification alerts for apps like WhatsApp and Snapchat, remote camera control, and music control via the connected phone. Battery life claims run up to approximately 120 hours in light use. On the durability side, it is rated for water resistance up to 1.5 meters for 30 minutes—enough for light water exposure—but it is not built for heavy submersion or diving.

While the Giga delivers impressive value, reviewers note some trade-offs: it uses a proprietary charging cable, the screen lacks adaptive brightness (making outdoor visibility and night use less optimal), and some users report inconsistent metrics in activity tracking.

Model Name: WITHit Giga Smartwatch
Model Number: 42-9002GYBKW

Display
Screen Type: AMOLED high-definition touchscreen
Screen Size: 2.04 inches
Resolution: 386 x 448 pixels

Body and Design
Case Material: ABS or aluminum (depending on model)
Case Size: Approximately 43 mm
Band Type: Silicone band with quick-release mechanism
Water Resistance: Up to 1.5 meters for 30 minutes (not suitable for swimming or diving)

Compatibility and Software
Smartphone Compatibility: Android 5.0 and later, iOS 9.0 and later
App Required: WITHit Smartwatch App
Operating System: Proprietary (not Wear OS or watchOS)

Health and Fitness Features
Heart Rate Monitoring
Blood Oxygen (SpO2) Tracking
Sleep Tracking
Step Counting and Calorie Tracking
Stress Level Monitoring
Women’s Health and Menstrual Cycle Tracking

Connectivity and Features
Bluetooth Connectivity for Smartphone Pairing
Call, Text, and App Notification Alerts
Music Control
Camera Remote Control
Voice Assistant Support (via connected phone)

Battery and Charging
Charging Type: Magnetic charging cable
Battery Life: Up to 2 to 5 days depending on usage
Charging Time: Approximately 2 hours

Sensors
Optical Heart Rate Sensor
Blood Oxygen Sensor
Accelerometer
Sleep Tracking Sensor

Physical and Build Features
Display Protection: Scratch-resistant glass
Strap Width: Standard 22 mm
Strap Material: Soft-touch silicone
Case Shape: Rectangular with curved edges
Color: Black

Additional Features
Customizable Watch Faces (including personal photo uploads)
Hydration Reminder
World Clock and Alarm
Weather Display
Sedentary Reminder
Stopwatch and Timer Functions

Notes and Limitations
The watch uses a proprietary operating system and is not compatible with app installations from Google Play or App Store.
Screen brightness must be adjusted manually and is not adaptive.
Some users report variable accuracy in step counting and health metrics.