Techsilver GPS Tracker- Good Points: Looks attractive. My partner loves wearing it as a piece of jewellery It's great to be able to contact my partner, who has Alzheimer's if I need to pop out to the shop. Tracking may well come in handy at some point. Charges quickly. Neutral Points: The chain makes a distinctive noise when rubbing against the fitting of the device- my partner quite likes this -but others may not. Not-so-good points: The subscription charge is pretty high at £15 per month and is required for the device to be of any use. The desktop app is very poor. If the person wearing the monitor is reasonably active, the battery charge will only last about 9 hours. This means that the device may need to be charged to be charged twice daily. The tracker function can be unreliable on short trips. Sometimes It only starts working after about 5 minutes of movement. (This is due to a limitation of the GPS rather than this specific tracker) This means that if the person goes to a local shop, stays there a short while and then returns home, the tracker may show them as still being in the shop. The Charging point is very fiddly to use. The emergency button enabling my partner to contact me is very small and very tricky to use for a person with Alzheimer's. Conclusion: Useful if you can charge it once or twice a day. If that doesn't work for you, the more expensive tracker with a longer battery life may be a better option.