Motorola CLS1410 UHF Frequency Professional Two Way Radio (6-Pack) Durable, lightweight design--easy for employees to carry and hold all day, yet built to withstand everyday use Operates on a four channels with a choice of 56 business-exclusive frequencies for enhanced voice quality, privacy and reliability 121 interference eliminator codes maximize choices through 83 digital and 38 analog private lines Keypad lock, audible call tones, "VOX" voice activated transmit with select audio accessories (not included) Requires FCC license--compatible with Motorola Spirit GT, GT+, and XTN UHF radios