FEATURES:        & 9679; B1X FOUR offers over 70 built-in effects        & 9679; 9 amp models for simulating classic rigs        & 9679; Up to 5 effects can be used simultaneously, chained together in any order        & 9679; Built-in expression pedal for control over any parameter (B1X FOUR only)        & 9679; Looper for recording up to 30 seconds / 64 beats of CD-quality audio        & 9679; ZOOM Guitar Lab software for creating, editing and managing effects and patches        & 9679; 68 built-in rhythm patterns which can be used in conjunction with the Looper        & 9679; 50 memory locations for storing user-created patches        & 9679; Auto Save function for automatic saving of all patch parameters        & 9679; PRESELECT function allows silent patch selection while the current patch remains operational        & 9679; Onboard chromatic tuner        & 9679; Input jack accepts standard mono bass guitar cable (both active and passive instruments supported)        & 9679; Auxiliary input jack for connection of personal music players        & 9679; Output jack for connection to amp or headphones        & 9679; Lightweight and small enough to fit in your gig bag        & 9679; Easily integrated into any existing pedal board        & 9679; Runs on 4 AA batteries, with alkaline battery life of 18 hours        & 9679; USB port for firmware updates, power and connection to ZOOM Guitar Lab        NOTE:Not include battery Not include AC adpter.