Wholesale Stainless Steel Inner Channel Couple Rings | Inner Groove Blank Rings for Smart Health Band & Wearable Payment Devices HFR835
Built-in inner channel / inner groove for smart module, sensor and chip installation
Made of high-quality stainless steel, sturdy, durable and comfortable to wear
Classic couple design, suitable for smart health, monitoring and payment scenarios
Smooth inner surface, no scratch, fit for long-time daily wear
Easy to assemble with smart health band and wearable accessories
Support small MOQ, mass production and customized processing
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