It's true of both airlines and Bluetooth speakers: Business class is better. For traveling workaholics, there’s the Harman Kardon Esquire, a handheld speaker with style for the boardroom and a portable size for the briefcase. Swathed in aluminum and cushy leather, this portable dynamo has two speaker drivers and a bass port for party time. Laid flat, the Esquire uses dual noise-canceling microphones to pick up audio from the team for conference calls. Upright, it uses just one mic for solo callers. Other perks include NFC for quicker pairing and USB ports to charge connected gadgets.