The new QT 256 DualMic from Q5X offers two channel total redundancy in a single package the size of a deck of cards. When small size and high quality matter, Q5X is the clever, rugged, and comfortable choice for your most demanding wireless audio challenges.

This unit is 2 Systems in one BeltPack. Only 3 inches wide, 2.5 inches tall & .75 inches thick

The QT256 DualPack incorporates 2x256 Channels, 2-Mini Voice Transmitters, with DCS-QT Technology. (2-680 mAh batteries) Output power 50mW
Internal Antenna – REFSWITCH™ option

Technical Data
▪ RF output power: 50-mW
▪ Transmission Frequencies: 256
▪ RF frequency range: 650...850 MHz
▪ Switching bandwidth: 25MHz
▪ Modulation: FM
▪ Nominal deviation: - +/- 40 kHz
▪ Peak deviation: +/- 54 kHz
▪ Compander: analogue DCS-QT
▪ Operating time: (Battery) 6 hrs @ 50mW 
▪ Dimensions: 3inch. x 2.5 inch. x .75 inch.
▪ Weight: 4.0 oz with batteries
▪ Audio connector: 4 pin lemo
▪ Antenna: Internal
▪ Signal to Noise 110dB (A) rms
▪ Frequency stability +/- 0.001%
▪ Spurious emissions 60 dB below carrier
▪ THD 0.3% at nominal deviation
▪ AF Frequency response 20-20,000 Hz
▪ Specific Absorption Ratio (SAR) 0.68 W/Kg
▪ Battery: Lithium rechargeable
▪ Temperatures: -10c to +45C
▪ Approvals: FCC, CE, Industry Canada