I have a feeling they could be opened and returned because ALL THREE OF THEM were dead. I had TrackR and loved it. After replacing the battery it worked great. So it's not the device itself. That's whoever sold it and shipped it with dead batteries.
Sennheiser HD280PRO: π§ Next-Generation Pro Audio Headphones
260 Review
Global Version HUAWEI Band 6 Fitness Tracker Smartwatch for Men and Women, 1.47ββ AMOLED Color Screen, All-Day SpO2 and Heart Rate Monitoring, 2-Week Battery Life, 5ATM Waterproof - Orange
190 Review
SAMSUNG Galaxy Watch (46Mm
259 Review
π« Renewed SAMSUNG Galaxy Buds Pro R190: True Wireless, Noise Cancelling Bluetooth Earbuds
208 Review