The SuperTooth HD is a Bluetooth speakerphone requiring no installation.Â Boasting Twin Speaker V Array Technology, the SuperTooth HD features two speakers for 5 watt audio output and a 5.4 watt amplifier, Supertooth HD is the most powerful sun visor carkit on the market. The built-in dual microphones pick up voices more clearly, even in noisy cars. With up to 20 hours talk time and 1000 hours standby time, the Supertooth HD's battery life isÂ unrivalled. The SuperTooth HD is equipped with a range of useful voice commands, meaning that you can check battery charge level, check the status of connection, call pre-dialled numbers, check your voicemail, call emergency, and answer incoming calls whilst driving safely.Â Thanks to SuperTooth Hands Free Assistant feature, you can dictate your SMS and e-mails to the SuperTooth HD, and post voice messages on your Facebook wall or on your Twitter page. This service also allows you to listen to your incoming e-mails.