SINNIS Launches Grace2 Smartwatch: The Lightest and Thinnest with a 1.85-inch AMOLED Display

Wearables

SINNIS Grace2: Redefining Lightweight and Thin Smartwatch Design

On The Global Inc.’s SINNIS brand has announced the launch of its new smartwatch, the “Grace2,” available from August 26, 2026. Priced at 8,980 JPY (tax included), the Grace2 sets a new standard for wearable technology by combining a large 1.85-inch AMOLED display with an exceptionally light body of 16g and a thin profile of 6.9mm.

Unprecedented Lightness and Thinness

The Grace2 is positioned as the lightest and thinnest smartwatch among 282 products surveyed in Japan. This achievement addresses a growing market demand for smartwatches that are comfortable enough to wear all day without being cumbersome. The device’s body measures 36x40mm, with its large display occupying approximately 81% of the front surface, minimizing bezels to maximize screen real estate while maintaining a compact form factor.

SINNIS Grace2 Smartwatch: Light, Thin, Large Screen

To illustrate its remarkable lightness, the Grace2 weighs only 16g, which is less than an empty 500ml plastic bottle (approximately 25-30g).

Grace2 Weight Comparison

Enhanced Notification Experience

One common challenge with thin and light smartwatches is the potential for weak or short vibrations, leading to missed notifications. The Grace2 tackles this by improving both the strength and duration of its vibrations, ensuring that users reliably receive alerts despite the device’s minimal form factor.

Grace2 Notification Display

Comprehensive Health and Smart Features

The Grace2 offers a wide array of functionalities for communication and health management:

Communication and Notifications:

  • Bluetooth calling with call history, phone book, and direct number input.

  • Receives notifications from LINE, SNS, email, and other apps.

  • App-specific notification toggle available on the device or companion app.

Health Management:

  • 24-hour automatic blood oxygen measurement (NEW).

  • Automatic heart rate recording every 30 minutes (24 hours).

  • Detailed sleep tracking (deep, light, REM, awake stages).

  • Stress, MET (Metabolic Equivalent of Task), and HRV (Heart Rate Variability) measurement (NEW).

  • Female physiological cycle tracking and prediction.

  • Over 100 sports modes.

Grace2 24-hour Health Monitoring

Daily Convenience:

  • Always-on display with analog and digital options (NEW).

  • Customizable wallpapers allowing users to set their favorite photos and freely arrange time, step count, and other parameters (NEW).

  • SOS (emergency call) function (NEW).

  • Up to 10 alarms and 8 types of reminders (e.g., sedentary, hydration, medication).

  • IP68 waterproof rating (for fresh water at room temperature; not suitable for bathing, saunas, or swimming).

Note: This product is not a medical device. Displayed values are for reference only and should not be used for medical diagnosis or judgment. Consult a physician if you have health concerns.

Design and Availability

The Grace2 is available in three color variations: Rose Gold, Silver, and Black. It supports standard 20mm watch straps, allowing for customization with commercially available options.

SINNIS Grace2 Color Variations

Product Specifications:

  • Product Name: SINNIS Grace2

  • Body Weight: 16g (Total weight including strap: 32g)

  • Body Size: 36×40mm / Thickness 6.9mm (thinnest part excluding sensor), Max thickness 8.2mm

  • Display: 1.85-inch AMOLED (approx. 81% display area)

  • Water Resistance: IP68

  • Strap: 20mm width / Interchangeable

  • Body Colors: Rose Gold / Silver / Black

  • Compatible OS: iOS 10.0 or higher / Android 5.0 or higher

  • Communication: Bluetooth 5.4

  • Battery: 235mAh (2-3 days with always-on display, 5-8 days with normal use)

  • Accessories: Main unit, silicone strap, charging cable, user manual

  • Warranty: 180 days (6 months quality warranty)

Sales Information:

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