Application of the 16mm fixed-cycle card point design b3 to replace the 4th generation of upgraded and thickened parts to skin by the application of the smart watch belts of the Keep's B4 spares

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Premium 16mm Fixed-Cycle Card Point Watch Band for Keep B4 Smartwatch
Upgrade your Keep B4 smartwatch with this precision-engineered replacement strap featuring a
16mm fixed-cycle card point design (B3)
for seamless compatibility. Crafted from
high-density thickened TPU material
, it offers superior durability and skin-friendly comfort for all-day wear. The
4th-gen upgraded buckle mechanism
ensures a secure fit with smooth adjustability, while the
reinforced stitching and matte finish
elevate both style and resilience. Ideal for fitness tracking, outdoor adventures, or daily wear, this strap combines
sweat-resistant performance
with minimalist design. Designed to replace OEM parts at a fraction of the cost, it’s the perfect choice for bulk buyers seeking
high-quality, affordable smartwatch accessories
. Compatible exclusively with Keep B4 models.

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