The HBH-GV435a is ideal for long conversations or a day full of hands-on tasks. Its comfortable ergonomic form and long talk time keep you in touch. Fewer dropped connections and faster transmission speed make for a high-quality handsfree experience. Automatic volume adjustment simplifies your day. The Bluetooth experience: Bluetooth wireless technology frees more than your hands it lets your devices talk to each other without tangles, across ranges of up to 10 metres. Adaptive Frequency Hopping (AFH): reduces the impact of interference between wireless technologies, resulting in excellent audio quality. Automatic volume adjustment: Walk into a noisy environment and the volume adjusts automatically in less than a second. Enhanced Data Rate: Much faster transmission speed, lower power consumption and greater band width. What this means is less interruptions and better battery performance. Compatibility: All Sony Ericsson wireless devices have been developed in coordination with Sony Ericsson mobile phones, but are also compatible with Bluetooth-equipped handsets from other manufacturers. Auto pairing: A feature that makes pairing the device with your Bluetooth mobile phone faster and simpler by dropping the PIN code without compromising security. Digital Signal Processing: Enhanced audio quality is achieved through Digital Signal Processing (DSP) technology, including compression and echo cancellation.