This is what Sony has done which a smart phone can’t do. This is their latest mp3 player. It’s a waterproof mp3 player (part of their W series walkman) that is wireless and can be worn whilst swimming. Say hello to the bottled walkman. Sony has placed their walkman inside a bottle of water and are being sold in vending machines across gyms in New Zealand.
The mp3 player costs around $100 and can hold up to 4gb of music. You can charge it for a short period of time (3 minutes) whilst you’re on the run and it can last for 90 minutes of playtime.