Weierwei Vev-3288s Manual ((link)) -

Press [FUN] + [VFO/MR]. A channel number will flash. Use the selector to choose a slot and press [VFO/MR] again to confirm. 4. Advanced Menu Settings

Before diving into the settings, familiarize yourself with the physical layout: Weierwei Vev-3288s Manual

Choose between High (5W) for range or Low (1W) to save battery. Press [FUN] + [VFO/MR]

Voice-operated transmission. Adjust sensitivity so the radio transmits automatically when you speak. Weierwei Vev-3288s Manual