Rino650QuickStartManual 3➋ Hold to turn on or offthe unit. Select to adjustbacklight, volume,squelch level, and to lockor unlock the screen.➌ Hold to talk. PTT standsfor push-to-talk.Manual ConventionsAll the pages are found on the homescreen. Use or to scroll throughthe pages. The small arrows (>) used inthe text indicate that you should selecta series of items in order, for example,“Select Delete > Yes.”Getting More information• Go to www.garmin.com todownload the latest manuals.• Go to http://buy.garmin.com,or contact your Garmin dealerfor information about optionalaccessories and replacement parts.Battery information warninGThis product contains a lithium-ionbattery. To prevent the possibility ofpersonal injury or product damagecaused by battery exposure to extremeheat, store the device out of directsunlight.The temperature rating for the devicemay exceed the usable range of somebatteries. Alkaline batteries can ruptureat high temperatures. Alkaline batterieslose a significant amount of theircapacity as temperature decreases. Uselithium batteries when operating thedevice in below-freezing conditions.The device operates on the includedlithium-ion battery pack or an optionalAlkaline battery pack, which uses fourAA batteries.