Motorola MC55 Features Dimensions: 5.78 in. L x 3.03 in. W x 1.06 in. D/ 14.7 cm L x 7.7 cm W x 2.6 cm D Weight: 11.1 oz./315 g (with rechargeable 2400 mAh Lithium Ion battery). Display: Color 3.5 in. QVGA (320×240) Touch Panel. Touch Panel: Glass analog resistive touch. Backlight: LED backlight. Standard Battery: Rechargeable Lithium Ion 3.7V, 2400 mAh Smart Battery. Extended Battery: Rechargeable Lithium Ion 3.7V, 3600 mAh Smart Battery Expansion Slot: microSD slot (maximum 16GB). Communication Interface: USB 1.1 Host and Client. Notification: Audible tone plus multi-color LEDs. Keypad Options: Numeric, QWERTY, AZERTY, QWERTZ and NAV PIM. Audio: Speaker, microphone and Bluetooth headset.