Upgrade 8W. Output Power: 8W version: 8W/4W/1W Switchable 5W Version: 5W/1W Switchable. 1 x7.4V/2800mAh BL-8 Battery ( Optional 3800mAh), the batter is 1800mAh if you buy " No Box" 5W UV-5R. Optional 5W.
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