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Fitness Trackers & Smart Scales: Second-Hand vs New
By the Nest & Yard editorial teamUpdated 2026-08-093 min read
Our pick: the eufy Smart Scale A1, Bluetooth Digital Bathroom Scale, 12 Measurements — the best Fitness Trackers & Smart Scales we tested, from £14.99.
Considering a new fitness tracker or smart scale to help you monitor your health? Buying used or refurbished tech can seem like a savvy way to save money, but it’s important to understand the potential trade-offs. This guide explores whether opting for a pre-owned device – perhaps one like the eufy Smart Scale A1 or a Fitbit Inspire 3 – offers genuine value compared to purchasing new, and highlights what to look out for when buying second hand.
See the full range in Fitness Trackers & Smart Scales.

#1 Pick
eufy Smart Scale A1, Bluetooth Digital Bathroom Scale, 12 Measurements- Bluetooth
£14.99
Pros
- Tracks 12 key body metrics including weight and BMI
- Bluetooth sync to the EufyLife app
- Sleek design fits any bathroom
Cons
- No WiFi, so pairing is per-session over Bluetooth

#2 Pick
Fitbit Inspire 3 Health & Fitness Tracker with Stress Management, Workout Intensity, Sleep Tracking, 24/7 Heart Rate- Bluetooth
Currently unavailable
Pros
- Up to 10 days battery life
- Built-in stress management and sleep tracking
- Lightweight and comfortable for all-day wear
Cons
- No built-in GPS

#3 Pick
XIAOMI Smart Band 9 Fitness Tracker, AMOLED Display- Bluetooth
Currently unavailable
Pros
- Bright AMOLED display is easy to read outdoors
- Long battery life between charges
- Tracks a wide range of workouts and health metrics
Cons
- Companion app has fewer features than premium brands

#4 Pick
Garmin Forerunner 245 GPS Running Smartwatch with Training and Performance Features- Bluetooth, ANT+, GPS
Currently unavailable
Pros
- Advanced running dynamics including VO2 max and training effect
- Built-in GPS with no phone required
- Up to 7 days battery life in smartwatch mode
Cons
- No touchscreen, relies on physical buttons
FAQ
What are the main advantages of buying a fitness tracker or smart scale second-hand?
Buying used can often offer significant savings compared to new devices, and you might find models with advanced features at a more accessible price point. It’s also a way to reduce electronic waste and potentially get a device that was previously highly rated before it became obsolete.
What should I look for when examining a used fitness tracker listing on Amazon?
Carefully review the photos provided, paying attention to any visible scratches or damage to the screen or casing. Check the battery health status if stated by the seller and verify that all accessories – charging cables, straps, etc. – are included.
What’s commonly prone to failure in fitness trackers?
Battery life is a frequent issue with older models, and the adhesive used to attach bands can degrade over time leading to loose fit or detachment. The touchscreens on some devices may also become unresponsive due to wear and tear.
Are there particular features that tend to break down more quickly in used fitness trackers?
Heart rate sensors can lose accuracy as the sensor components age, and Bluetooth connectivity might intermittently fail if the device has been subject to frequent pairing/unpairing. Similarly, GPS modules can experience signal loss.
How do I check the condition of a smart scale's display?
Inspect the screen for dead pixels or uneven lighting; these are common issues on used scales. Also, ensure the buttons operate correctly and that the scale accurately measures weight – test it with multiple weights to confirm.
What maintenance should I consider if buying a used fitness tracker?
Regularly clean the device’s screen and sensors using a soft, dry cloth to remove dirt and sweat. Keep the charging cable and connectors free from dust and debris for optimal performance.
Can I expect accurate data on a used smart scale?
While many scales function correctly, older models may have slightly less precise measurements due to sensor drift or calibration issues. Always refer to the manufacturer’s instructions for optimal accuracy.
What if the battery of a used fitness tracker is significantly depleted?
Check with the seller about whether the battery has been replaced; replacement batteries can be relatively inexpensive, but ensure they are compatible with the device. Note that some trackers may no longer be supported with software updates.
Are there any specific brands or models known for durability in the second-hand market?
Generally, Fitbit and Garmin devices tend to hold their value well on the used market due to their robust designs and long lifespans. However, it’s essential to thoroughly inspect any device regardless of brand.
What should I do if I encounter problems with a used fitness tracker or smart scale after purchase?
Refer to the manufacturer's warranty information for potential support options, or check Amazon's standard returns policy as outlined on their website.
In depth
Buying a fitness tracker or smartwatch used can seem like a savvy way to save money, but it’s essential to approach the secondhand market with caution. While tempting offers on platforms like Amazon UK might appear attractive, there are several key considerations that go beyond simply securing a lower price – factors relating to battery health, potential damage, and ultimately, the overall lifespan of the device.
Before you even begin browsing used listings, understand that fitness trackers rely heavily on their batteries. Older models, particularly those with older lithium-ion technology, are prone to significant battery degradation over time. This means a tracker bought second-hand might have drastically reduced accuracy in tracking steps, heart rate, or sleep patterns – features many users depend on. Furthermore, the charging circuitry itself can wear out, leading to intermittent charging issues or, eventually, complete failure of the charger. Check for signs of corrosion on the charging port and ensure the charging cable is in good condition before purchasing.
When evaluating a used fitness tracker listing, pay close attention to the seller’s feedback and description. A detailed account from a reputable user regarding battery performance is invaluable. Look for mentions of how long the battery lasts between charges – anything less than 80% capacity should raise concerns. Scrutinize photos carefully; look for signs of physical damage such as cracked screens, dents, or scratches on the casing. These can be indicative of rough handling and potentially impact the tracker's durability. Pay particular attention to the condition of the buttons and touchscreen – responsiveness issues are a common complaint with used devices.
It’s worth noting that certain components within fitness trackers tend to fail more frequently than others, regardless of whether they’re new or used. The vibration motor, responsible for notifications and alerts, is particularly susceptible to wear and tear. Similarly, the sensor modules – which track heart rate, steps, and activity levels – can become inaccurate over time due to dust accumulation or internal component degradation. Finally, the adhesive that secures the tracker to your wrist can lose its stickiness, leading to discomfort and potential skin irritation.
Considering the cost of a new fitness tracker, investing in a refurbished model from Amazon UK often represents better value. Refurbished devices are typically returned items that have been inspected, repaired, and restored to full working order by Amazon themselves. They usually come with a warranty period – typically 12 months – offering peace of mind against defects. While you might pay slightly more upfront than for a used tracker, the assurance of a functional device with guaranteed support can outweigh the potential risks associated with buying secondhand.
Ultimately, the decision to buy a fitness tracker used or refurbished hinges on your budget and risk tolerance. If you’re comfortable taking a chance on an unknown seller and are prepared for potential battery issues or minor repairs, a used tracker could offer substantial savings. However, if you prioritize reliability, accuracy, and peace of mind, opting for a new or certified refurbished device from Amazon UK is likely the more sensible choice – guaranteeing functionality and offering protection against unforeseen problems down the line. Remember to always check Amazon’s standard returns policy before making any purchase.
The Nest & Yard editorial team
Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-09.