This repeater box is capable of lengthening the communication distance to a great extent, thus letting you hear from partners that far from you clearly and smoothly. Strong interference immunity prevents it from being interfered by other signals. Gives a better signal. Furthermore, it is suitable for underground mine, site construction of cable erection, etc.Features:Walkie Talkie Repeater Box - To create a super long distance walkie talkie communication smoothly and stably.Strong Interference Immunity - Strong interference immunity makes sure a stable and smooth communication without being interfered by other signals.Two-way - Two-way forwarding function makes it support UHF-UHF, VHF-VHF, VHF-UHF, UHF-VHF.Audio Triggering Mode - The volume of walkie talkie should be adjusted to the highest when using.Wide Compatibility - Suitable for underground mine, site construction of cable erection, etc.Specification:Product type: Repeater BoxPlug: K plugTwo-way: SupportBand: Supports UHF-UHF, VHF-VHF, VHF-UHF, UHF-VHFMode: Audio Triggering ModeFrequency difference: >5MHzPackage size: approx. 6.2 * 5 * 2.3 cm/ 2.4 * 2.0 * 0.9 inPackage weight: 98g/ 3.5ozPackage List:1 * Repeater Box2 * Connecting Cables