【Product Description】 (From the official distributor Okada International HP) The EMG-J uses a crescent-shaped bar magnet with the same radius as the bass fingerboard to balance the output of each string and further improve the sound's attack. It is designed to support 5-string basses. It can be mounted on basses with a maximum string width of 69mm. It is an active pickup and is powered by a 9V battery. 【Reason for Listing】 I initially purchased a J set (slightly different sizes for the neck and bridge pickups), but it turned out that the neck pickup cavity on my bass was the same size as the bridge pickup cavity. Therefore, I purchased a separate bridge pickup, and the neck pickup became unnecessary. (See the bottom of photo ④ for the exact size) 【Included Items】 ・Box (opened) ・Pots, battery clip, jack, cables, etc. (Photo ⑤) ・Instruction manual