Because when you're off on adventures, you don't want to carry a lot of stuff. The small, lightweight X-Bass is an FM radio with powerful speaker, MP3 playback, and built-in Bluetooth so you can connect to your device. It's also a bright torch light with flashing LEDs. Plus it's USB, SD, micro-SD and even karaoke compatible. Convenient handle and carry strap. AC power supply included. Rechargeable 6V battery included; takes 4 AA batteries (not included). Approx. dimensions 4" x 4" x 6". Specify Black, Red, or Blue.