Check the listing for details. Clear-Com CZ-BP410 2-Channel Intercom Beltpack for BS410 Base Station. Condition: New. Listed at 1185.00 USD. The rugged, light-weight and ergonomically-designed BP410 intercom beltpack from Clear-Com is designed to be used with their BS410 base station (sold separately). Operating in the license-free 2.4GHz frequency range it features single-channel operation that enables any four (4) beltpack and/or all-in-one wireless headset users to engage in simultaneous, full-duplex communication—or in dual-channel operation, three (3) users can operate in full-duplex with up to 13 additional users working in listen-only mode (note: additional beltpacks are sold separately). The BP410 features an over-mold beltpack case with beltclip and comes in a tough, over-mold, reinforced casing with long-lasting keypads and no mechanical switch. It provides up to 12 hours of battery life using the BAT50 Li-Ion battery.Features2.4 GHz license-free operation7 kHz wideband audioSingle or dual-channel operationUp to 12 hours of battery lifeLight-weight/compact/ergonomic/rugged and reliable designUp to 15 beltpacks and/or all-in-one handsets on a single system (additional beltpacks sold separately)SpecificationsAudio:Channels: 2 audio channelsFrequency Range: 2400 MHz – 2483.5 MHzFrequency Response: 200 Hz – 7 kHzAntenna: Internal, horizontal/vertical diversityHeadset Connector: 4-pin, mini-DINMicrophone: ElectretHeadset Output: 160 mW into 32 ΩSystem Distortion:Controls: Power, Volume-Up, Volume-Down, A, B, ISOIndicators: Dual-color LED (red/green)Battery Requirements: 3.6V lithium-ionBattery Life: Up to 12 hoursAntenna:Internal, Horizontal/Vertical diversityTransmitter:Type: Frequency Hopping, Spread Spectrum (FHSS)Transmit Power: 100 mW burstModes: Momentary or LatchType: Gaussian filtered FSK, TDMAFrequency Stability: 13 ppmHarmonics/Spurious: Exceeds FCC and ETSI specificationsReceiver:Type: Frequency Hopping, Spread Spectrum (FHSS)RF Sensitivity:Frequency Stability: 13 ppmDistortion:Environmental/Physical:Operating temperature: 32° F to +122° F (0° C to +50° C)Dimensions (H x W x D): 2.25" x 4.5" x 1" (57.2 x 114.3 x 25.4mm)Weight: 7.4 oz. (0.21 kg) including battery and pouch