what's in it: 1 x element diffuser, 1 x free micro oil (15ml) in the scent you choose made for: kirri micro oils (15ml), which screw straight in power: plugs in, with a built-in battery for up to 8 hours away from the wall. best plugged in for daily schedules app: set schedules in the kirri app over bluetooth, including different weekend times. the schedule is saved on the diffuser, so your phone doesn’t need to stay nearby warranty: 12 months why your diffuser runs all day on low please note: no water or heat needed. it’s made for kirri oils, which keep it running well