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  3. 813 vs RB637

NXGKET 813 vs Retevis RB637

What 813 does better (2) and where RB637 wins (1) — every spec side by side.

NXGKET 813
NXGKET · 2026813
7.2Score
2 advantages≈ £30
Higher score
vs
Retevis RB637
Retevis · 2026RB637
5.8Score
1 advantage≈ £35
6.2Range & power2.3
6.6Battery7.1

Why is 813 better than RB637?

  1. Maximum range (claimed)8 km vs 2 km4×
  2. USB-C chargingYes · RB637: No

Why is RB637 better than 813?

  1. Battery capacity1,200 mAh vs 2,000 mAh+67%
Specifications

Side by side

NXGKET 813NXGKET 813≈ £307.2
Retevis RB637Retevis RB637≈ £355.8
Radio & range
Radio standardsPMR446PMR446
LicenceLicence-freeLicence-free
Digital mode (DMR / dPMR)NoNo
Frequency ranges446 MHz446 MHz
Transmit power0.5 W0.5 W
Channels1616
Maximum range (claimed)8 km2 km
CTCSS / DCS sub-tonesYes—
Squelchadjustable—
Call tones10—
Power & battery
Battery capacity1,200 mAh2,000 mAh
Battery voltage3.7 V3.7 V
Power sourceRechargeable packRechargeable pack
USB-C chargingYesNo
Battery level indicatorYesYes
Design & durability
Weight93 g—
Width30 mm—
Height60 mm—
Depth160 mm—
ShockproofYesYes
DisplayBacklit display—
Colours—Black
Features
VOX (hands-free)YesYes
VOX sensitivity levels3—
Channel scanYes—
FlashlightYesYes
Key lockYes—
Monitor buttonYes—
Connectivity
Headset / earpiece jack—Yes
ConnectorsUSB-C2,5 und 3,5 mm
Radios in the base pack3—
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