Retevis RT21 Walkie Talkies for Adults, 2 Way Radio with Clear Sound, Durable Portable Handheld Radios Hands Free 1200mAh Battery K12 School Camping & Outdoor (Black, Pack)

Clear audio quality; during school events like sports meets; two way radio ensures that security and staff can communicate effectively; maintaining order and safety; 100db volume; audio distortion rate of no more than 5% Durable and reliable; trust in the RT21 two way radio; backed by rigorous testing; with 100,000 PTT button press tests; 1.2m 360° drop tests; 100,000 plug-in/out tests; high and low-temperature tests; aging tests; and back clip pull tests Compact and portable; enjoy the convenience of a compact and portable design with the walkie talkie; just 125x62x32mm and weighing only 207g; easy to carry and use; with a back clip for secure attachment; you can keep it within reach at all times Long runtime; boost your device's endurance with the two way radio's upgraded 1200mAh battery; enjoy over 19 hours of usage time and fewer interruptions; whether you're monitoring school events; conducting security patrols; or managing daily operations Stay connected across vast distances; RT21 walkie talkies with long-range communication capabilities; less than 27,000 sq. m and less than 25 floors; ensures reliable communication even in large school campuses Upgraded charging; experience the convenience of versatile charging with walkie talkies rechargeable; use either the base charging method or the Type-C direct charging; it will be fully charged in just 2 hours and 37 minutes; saving you precious time Upgraded functions; enhance your communication experience with the walkie talkie's array of functional upgrades; from one-key VOX activation to emergency alerts; these features ensure seamless and efficient communication High compatibility; enjoy seamless interoperability with all Retevis 16-channel license-free radios; including models H777; RT24; RT27; RT668; RT622; RT617