ATW-R2100c receiver and ATW-T210c body-pack transmitter with AT829cW lavalier microphone.Specifications:Overall System- Operating Frequencies: UHF- Band D: 656.125 to 678.500 MHz DISCONTINUED IN NORTH AMERICA- Band I: 487.125 to 506.500 MHz- Band S: 508.125 to 526.825 MHz- Modulation Mode: FM- Maximum Deviation: 40 kHz- Frequency Response: 100 Hz to 15 kHz (+1 dB, -3 dB)- Operating Range: 100 m (300′), typical- Open range environment with no interfering signals.- Total Harmonic Distortion: < 1% (at 1 kHz, 20 kHz deviation)- Operating Temperature Range: 5 C to 45 C / 41 F to 113 F- Battery and LCD performance may be reduced at very low temperatures.- Number Of Channels: 10 totalNotes- Third-generation 2000 Series (b version) components: ATW-R2100b receiver, ATW-T210a body-pack transmitter, ATW-T220a cardioid dynamic microphone/transmitter- Second-generation 2000 Series (a version) components: ATW-R2100a receiver, ATW-T210a body-pack transmitter, ATW-T220a cardioid dynamic microphone/transmitter- First-generation 2000 Series (original) components: ATW-R2100 receiver, ATW-T210 body-pack transmitter, ATW-T220 cardioid dynamic microphone/transmitter- CONSUMER ALERT: Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this wireless microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device.- Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change.Handheld Transmitter- RF Power Output: High: 30 mW; Low: 10 mW (switchable), at 50 ohms- Spurious Emissions: Following federal and national regulations- Microphone Element: Dynamic cardioid- Battery Type: Two 1.5V AA alkaline (not included) or two 1.2V AA NiMH (not included)- Recharging power for NiMH batteries (with ATW-CHG2)- U.S./Canada/Latin America: 3.2 V DC, 230 mA x2- Other world areas: 3.2 V DC, 320 mA x2- Battery Life: High: 7 hours (alkaline), Low: 9 hours (alkaline)- Depending on battery type and use pattern.- Dimensions: 232.0 mm (9.13") long, 48.0 mm (1.89") diameter- Net Weight: 252 g (8.9 oz), without batteries- Accessories Included: AT8456a Quiet-Flex stand clampBody Pack- RF Power Output: High: 30 mW, Low: 10 mW (switchable), at 50 ohms- Battery Life: High: 7 hours (alkaline), Low: 9 hours (alkaline)- Depending on battery type and use pattern.- Battery Type: Two 1.5V AA alkaline (not included) or two 1.2V AA NiMH (not included)- Recharging power for NiMH batteries (with ATW-CHG2)- U.S./Canada/Latin America: 3.2 V DC, 230 mA x2- Other world areas: 3.2 V DC, 320 mA x2- Dimensions: 66.0 mm (2.60") W x 22.5 mm (0.89") D x 92.3 mm (3.63") H- Input Connections: Four-pin Locking Connector- Pin 1: GND- Pin 2: INST INPUT- Pin 3: MIC INPUT- Pin 4: DC BIAS +9V- Net Weight: 81 g (2.9 oz), without batteries- Spurious Emissions: Following federal and national regulationsReceiver- Receiving System: True diversity- Image Rejection: 60 dB nominal, 55 dB minimum- RF Sensitivity: 20 dBuV at 60 dB S/N ratio (50 ohms termination)- Antenna Input: BNC-type, 50 ohms- Bias voltage 12V DC, 60 mA, each- Power Requirements: 12-18V DC, 500 mA- Dimensions: 210.0 mm (8.27") W x 162.2 mm (6.39") D x 44.0 mm (1.73") H- Not including BNC connectors or feet.- Weight: 1.0 kg (35.3 oz), without accessories- Accessories Included: Two flexible UHF antennas; AC adapter (country dependent); rack-mount adaptersAdditional Receiver Specs- Maximum Output Level: XLR, balanced: +9 dBV- " (6.3 mm), unbalanced: +4 dBV- Balanced Audio Output Attenuator: Two position switch: 0 / -12 dB