Has an external memory slot
The device has a standard memory slot (such as an SD or micro SD card slot) so that you can either extend the internal storage with affordable memory modules or you can retrieve data, such as photographs, easily from a memory card.
Clearly lower SAR for body (USA)
0.42 W/kg lower SAR for body (USA). SAR (Specific Absorption Rate) describes how much radio frequency energy emitted by the device will be absorbed by your body. The rate is measured at hip level. The legal limit is 1.6 W/kg in the USA.
Has a built-in FM transmitter
Built-in FM transmitter allows you to wirelessly stream music from your device to any radio, e.g. in your car, at a predefined frequency.