Retevis RB666S license free walkie-talkie builds on RB666 model, featuring a new 1.3-inch display and incorporating a 4-button design for seamless interaction with the screen. With 1-hour fast charging technology and multiple charging options, it's compact and easy to carry. LED high-beam flashlight paired with a fluorescent exterior design ensures you're unafraid of the dark.

Keep operations smooth with rechargeable 2 way radio; charge fully in 1 hour; right for warehouse or logistics teams; offer over 12 hours of use; reducing downtime

Charge your walkie talkies effortlessly with base charger or Type-C; whether in the wilderness or on the go; ensure you’re always powered up; suitable for outdoor lovers relying on versatile work walkie talkies for adults

Ease using the 1.3” LCD screen; displaying channel, battery, and signal strength; let you learn information at a glance; ensuring your two way radios are always mission-ready

Keep crews agile with two-way radios that go wherever you go; rechargeable walkie-talkies are a must-have for event planners who need walkie-talkies for adults that blend functionality with convenience
Illuminate trails with built-in LED flashlights on your walkie talkies; suitable for night adventures; the two way radios long range rechargeable double as emergency tools; ensuring safety for outdoor enthusiasts

The walkie talkie's fluorescent design ensures high visibility in low-light outdoor environments; making it easily spotted by you during night hikes or camping trips

With its user-friendly button layout; the radios walkie talkies allow for quick and intuitive control; suitable for outdoor enthusiasts on the move during hiking; camping; or cycling adventures

experience clear communication with the 2 way radio's clear audio quality; ensuring that every word is heard loud and clear; even in noisy outdoor settings like windy trails or bustling campsites

The one-key VOX feature on the walkie talkies lets you talk hands-free, making it right for outdoor activities where you need to keep your hands on your bike; hiking poles; or camping gear

Easily sync your 2 way radio with other radios in your group with the one-touch pairing function; ensuring seamless communication during outdoor trips like group hikes or cycling tours

The radios walkie talkies allow you to quickly adapt to different communication environments by duplicating CTCSS/DCS; enhancing flexibility during outdoor adventures; and offering more compatibility and adaptability

Protect your settings and prevent accidental button presses with the walkie talkies' channel lock and button lock features; ensures the radios operate as intended; reducing miscommunication or disruptions during outdoor adventures
In case of an emergency during your outdoor activities; the two way radio's emergency alarm function can quickly alert others in your group; providing an extra layer of safety

| Overall Specifications | Specification |
|---|---|
| Frequency Range | PMR446 |
| Battery Capacity | 1000mAh |
| Channel Step Value | 12.5KHz |
| Number of Channels | 16 Channels |
| Operating Voltage | DC3.7V |
| Antenna Impedance | 50Ω |
| Product Size | 955325mm (HWD) (Not including antenna) |
| Operating Temperature | -20°C ~ 60°C |
| Receiving Section | Specification |
|---|---|
| Receiver Sensitivity | -122dBm |
| Receiver Selectivity | >40dB |
| Intermodulation | ≥65dB |
| Audio Distortion | ≤5% |
| Squelch Selection | ≥65dB |
| Audio Output | >500mW |
| Receiver Current | ≤1.5A |
| Standby Current | ≤70mA |
| Transmitting Section | Specification |
|---|---|
| Output Power | 0.5W |
| Output Current | ≤1.3A |
| Maximum Frequency Deviation | ≤2.5KHz |
| Spurious Emission | ≤-60 dB |
| Audio Distortion | ≤5% |
| Impedance | ≥84dB |
| Transmit Frequency Deviation | ≤-20dBm |
| Modulation Type | FM |
| Frequency Response | ≥40dB |
| Modulation Sensitivity | 8-12mV |
| Frequency Stability | ±2.5ppm |
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