About Retevis H777: 【Compatible and Interoperable】H-777 4.0 designed for strong compatibility with H-777 2.0 & 3.0 version and other Retevis FRS two way radios; like RT22; RT68; H-777S; B3H etc; facilitating team communication 【Instant Operation】dedicated keys for VOX; emergency alarm; one-key pairing; flashlight; enables immediate communication without complex setup; ideal for quick deployment during school events 【Rechargeable Walkie Talkies for Adults】Type-C direct charging and charging base station; 1000mAh lithium-ion battery with power-saving mode; ensures 12-hour continuous operation for fieldwork or event coordination 【Clear Communication】upgraded big speaker port & 0-9 level squelch; walkie talkie delivers loud and crisp audio even in noisy school hallways or school group activi.
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