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✔ Relieves back pain fast ✔ Improves posture naturally ✔ Comfortable & adjustable ✔ Invisible under clothes

Heart rate exercise step bracelet

$47.58 USD

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Color Red Black Blue

Model: K1
Compatible platform: iOS, ANDROID
Applicable people: business, adult, old man, fashion, public, children
Screen size: 0.66
Appearance size: 46.7mm19.7mm11.2mm
Material: PC+TPU
Battery capacity: 85mah
Interface: USB 2.0
Wireless distance: 5m-10m