the M80 has a built-in 3D sensor that picks up the entire frequency range of your guitars body. A patented floating secondary coil acts both as a humbucking coil and a 3D body sensor adding enhanced richness and complexity to the sound. An all-in-one pickup that will capture the character of your guitar like no other magnetic pickup ever created. The proprietary suspension allows each axis of the 3D coil to contribute while the secondary coil is tuned to respond to the entire frequency range of the guitar. Relied upon by Coldplay Oasis David Gilmour and MGMT L.R Baggs pick-ups have gained a prestigious reputation for producing high quality equipment that effectively captures the body and soul of an acoustic guitar. Click on the video below to watch a review of the M80 by Acoustic Guitar Magazine: Included Accessories: Pre-wired Strapjack assembly Spare battery 3/32? Allen wrench Setup Manual