Pioneer wants you to to keep your hands on the wheel, so they developed this special remote to enhance on-road safety and convenience. The CD-SR100 wireless remote controls a wide range of receiver functions, and attaches securely to your steering wheel with a supplied strap. The convenient remote affords fingertip control over volume, mute, source selection (AM, FM, CD, etc.), up/down/left/right cursors, and audio settings. The CD-SR100 is for use with Pioneer's IP-Bus receivers (compatible receivers will have a "P" in the model number). Dimensions: 1-15/16"W x 2-7/8"H x 1-1/8"D. 1-year warranty.