ClearOne Wireless Beltpack Transmitter (M500: 486 MHz to 512 MHz) for use with Lav or Headset mic. (Microphone sold separately)

• RF Output: 1, 10, 25 or 50mW, user-selectable
• Antenna: External, field-replaceable
• Display: OLED
• Power: USB, AA rechargable (included), or AA disposable
• Indicators: Battery status, mute status
• Programmable Switch: Talk, mute, logic mute, on / off
• Mic Input Impedance: 47 K Ohms
• Mic Bias: 3V
• Mic Connector: TA4
• Battery: Two rechargeable NiMH included, standard AA size
• Battery Charge Time: 4 hrs
• Battery Talk Time: Up to 8 hrs continuous usage per charge, typical @ 1 mW
• Dimension: 2.8 L x 2.4 W x .66 H inches
• Weight: 0.35 lbs (.16 Kg) including batteries

Multiple RF Ranges
+ M500: 486 MHz to 512 MHz
+ M550: 537 MHz to 563 MHz
+ M586: 573 MHz to 599 MHz
+ M915: 902 MHz to 928 MHz