1) Compact and portable design

2) No Cables or Clumsy Cradle required

3) Works with Both Mac and PC for both data transfer and charging

4) Charges your shuffle via any powered USB ports USB power supplies and USB power packs

5) Can be attached onto keychain or straps

6) Compatible with 3rd generation iPod shuffle / 2nd generation iPod shuffle

7) Length: 4.6cm