Retekess TT106S Tour Guide Headsets, One-Key Mute, 200m/656ft, 23H Long Battery, Tour Guide Microphone and Speaker for Factory, School, 1 Charger and 20-Slot Carry Bag (2 Transmitters 20 Receivers)

Stable communication; with an ultra-long working distance of 200 meters; our earhook tour guide system becomes your best companion for outdoor adventures or indoor guided tours
AUX audio input; the earhook tour guide system excels with physical connection for better sound quality; stable and interference-free link; wide device compatibility; easy plug-and-play use
9999 channels; with its vast channel resources; earhook tour guide system can intelligently scan and automatically select the optimal channel; effectively avoiding interference and ensuring clear and smooth sound transmission
Safe and convenient; the lightweight ear-hook mini receiver is easy to carry and store; taking up minimal space; so you can enjoy convenient communication anytime; anywhere
Large-button design; with just a gentle press; you can quickly activate your commonly used functions; This earhook tour guide system provides a simple and efficient operation experience