ccheen smart bracelet, subscription-free 24/7 health tracking, heart rate, spo2, hrv & sleep tracker with ipx8 waterproof, wearable activity & fitness tracker, 7-day battery, 2 bands silver is up for auction in Electronics. The current bid is $3.00, 94% below the $49.49 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.