... USB direct read, Bluetooth file transfer, Bluetooth headset (voice) 10.Image format; jpg, gif Basic functions Airframe Contacts: 200 group ... books, dual-card double question Dual Bluetooth, IP call, calendar, to-do, alarm clock, calculator, exchange rate, stopwatch, world time, ... :180-280 minutes Standby time :160-260 hours Time-to-market: 2008.10.15 Form: handwritten Size: 86 × 48 × 12mm Weight: ...