It's a phone translation service that makes travelling in China much easier. You sign up online for a certain number of minutes and then add credit when you run out. All you need is a mobile phone, which you can pass to anyone you need to speak to and they can interpret what you want to say. Best part is it runs 24 hours a day so it can be really useful when it's 3am and you've realised you've lost the address of the hotel you're staying in.
Using it with international roaming can be a bit pricey (as you're using a UK network's roaming rates) so I'd recommend getting a Chinese SIM card which means it's a local-rate call from anywhere in the country.
Last time I checked they were about to introduce a SIM card delivery service but might be worth checking first. We bought our SIM cards at Beijing airport.
Hotels and apartments in Simferopol, vacation rentals by the sea and in the countryside, interpreter service, guided tours.