The Oppo Watch X3 offers a premium Wear OS experience with a titanium alloy frame, sapphire crystal display, and up to five days of battery life. Priced around €300, it competes with established smartwatch brands by combining high-end materials like sapphire crystal and titanium alloy with robust durability ratings including IP68/IP69 and MIL-STD-810H certification. The 1.50-inch LTPO AMOLED display peaks at 3000 nits in sports mode, powered by the Qualcomm Snapdragon W5 Gen 1 chipset and 646 mAh battery. Running Color OS Watch 7.0 over Wear OS 6.0, it includes ECG, SpO2, and skin temperature sensors.

Design-wise, the Watch X3 is nearly identical to the OnePlus Watch 4 but distinguishes itself with superior build quality. The Misty Titanium variant features 12 faceted bezel cuts and a Dynamic-Link fluoroelastomer strap, while the Obsidian Black model offers a simpler aesthetic. Both versions use standard 22mm straps, though official alternatives are currently unavailable. The glass-fiber-reinforced plastic back is a minor compromise in an otherwise premium build.

Health tracking is comprehensive, supporting heart rate, SpO2, ECG, and skin temperature monitoring. The crown navigator supports customizable shortcuts, including a long press to trigger Google Gemini. With 10W wired charging and 32GB storage, the Watch X3 positions itself as a durable, feature-rich alternative for Android users seeking longevity and premium aesthetics.