USB Sync Transfer Data Cable + Generation X Antenna Booster for Samsung R600 (HueII), A777, A637, U810 (Renown), R310 (Byline), i770(Saga), R800 (Delve), A867 (Eternity), T459 (Gravity), T919 (Behold), R550 (Jetset), i910(Omnia), i907(Epix), A767, A137, U650 (Sway), T109, U430, M310, A837 Rugby, U310, A237, R450(Messager) USB Data Cable for Data Transfer and Syncing with your cell phone Connect your cell phone with your PC/Laptop by the USB port Allow to manage & backup your phonebook, and change ring tones/logo etc. Allow you access your contacts, PC data, the Internet and e-mail. Transfer rate up to 4 Mbps. Antenna Booster Generation X is the latest signal enhancing booster available