Off-the-shelf AA nickel-metal-hydride cells
The SP500 has a very good stamina as it is able to offer a good amount of talk and standby time. You can even replace the rechargeable batteries with off-the-shelf AA nickel-metal-hydride cells when they wear out. It boasts up to 20 hours talk time and 480 hours standby time.
The multifunction button
Although the multifunction button used chiefly for connecting and disconnecting a call is large enough to handled and, the mute button and the volume dial are too small which ensures safety while driving.
The SP500's microphone works perfect, delivering clear, even if slightly tinny, sound to the receiving handset.
1. The Jabra SP500 has impressive battery life and works well with our cell phone's voice-dialling interface.
2. Doesn’t require installation.
3. Automatically adjusts speaker volume to account for background noise.
In nut shell: