Grace Digital Mini-Bullets are well built indoor/outdoor wireless speakers that produce excellent sound quality. These splash-resistant, weatherproof speakers can be used anywhere you want to place them thanks to engineering that complies with International Weather Proofing Standards (Level IPX3).
Each mini-bullet features 3 watts of power generated by 8 AA batteries or via the AC adapter plug. If you are operating the speakers on battery power you can expect roughly seven hours of run-time depending on the volume level and mood light usage. Each speaker has an individual volume control button, power button, wireless channel select, and a button to turn the LED mood light on the speaker on or off. The mood light is a nice touch especially for those relaxing evenings outside on the porch or near the pool.
The transmitter for the Grace Mini-Bullets is a small flat 900MHZ transmitter that can support up to four speakers and can send signal up to 150 feet. The standard package when you purchase the Mini-Bullets includes two speakers and the transmitter. There are two channels within the 900MHZ band that you can select in case you run into interference from other devices, and the speakers should automatically tune themselves to the correct channel. There is also a small antenna on top of the transmitter to help boost the signal a small amount. The energy conscious users will also be happy to know that the transmitter and the speakers use an automatic power-off feature when they are not in use.
Installation of this wireless speaker system is a cinch. You simply connect your audio source to the transmitter using either the old faithful red and white RCA cables or a standard stereo mini-jack (the one most headphones use). Once connected, power the transmitter and speakers up and the connections should automatically be made and you are ready to enjoy the music.