Bought a personal tracker for my wife who has dementia. Mostly excellent customer service. Tracker looks great quality and is waterproof. However: Very expensive: the £164 is cheap but £15 per month for connection to mobile network. I only pay £10 pcm for my SIM only mobile contract! This is clearly aimed at rich people to whom money is less of a concern. Also, the idea that someone with dementia (generally) can easily hold a two way conversation with the device is a bit of a joke. My wife is only in the early stages but she kept frgetting to keep the button pressed for 3 seconds, held it (naturally) by the edges, thus blocking either the microphone or speaker or both, and when she couldn't qute hear properly, she pressed the button again, thus cutting us off. Even with an able bodied person a conversation is difficult with any sort of backgound noise. It isn't able to recognise an answerphone machine (like many phones) and so when dialing to the emergency contacts, stops at the first even if they don't answer (btw disabling your answerphone has to be done by your phone provider and so is semi-permanent). Only works on 2G so won't work in USA and many oher countries around the world (but Europe in OK). In the end I bought from GPS Bob, this tracker doesn't have two way conversation (just an sos button to one contact) but was only £230 and no other fee for 5 years and it works all over the world (2 and 4G). 5 years of TechSilver would cost £160 + £15 x 12 x 5 = £1,285! I really wanted to buy from TechSilver becasue they seemed nice and are local to me (Nottingham) but £230 versus £1,285 ....no-brainer!!!! I said mostly good customer service because Aron was brilliant until I said I wanted to return the tracker and then he clearly didn't want to know me, and even though I reminded him that I paid £10 extra for a lanyard, this £10 wasn't refunded (and btw, I thought £10 for a cotton lanyard was a bit mean). Good luck TechSilver.