Premium Retractable Rapid Car Charger + Generation X Antenna Booster for Sony Ericsson K750, TM506, W200i, W300I, W350, W350i, W380, W550I, W580i, W760a, W810I, Z310i, Z520I, Z750a Premium 100% Retractable Car Chager with Full Metal Contacts IC Chip to prevent overcharging. Charger fully retracts with a push of a button Charger can extend up to 3 ft. Antenna Booster Generation X is the latest version of the Signal enhancing antenna booster