iPAQ 510 Voice Messenger can become your personal "voice valet" with Voice Commander. Command Voice Messenger to do more than 20 phone, e-mail, calendar, and productivity tasks. Caller ID presents a phone number, name, or even a photo. Scan, read, and reply to e-mail using Microsoft Exchange, POP3, or IMAP. You can also use VoiceReply to reply without typing. Be productive with mobile versions of Microsoft Outlook, Office, and Internet Explorer for Smartphone. Save your wireless airtime minutes while in the office with Voice Over IP over your wireless LAN (Wi-Fi) and your company's PBX phone system. Use a Bluetooth headset or the built-in speakerphone. Voice Messenger offers built-in camera with 1.3 megapixel and 1280 x 1024 resolution, 64MB SDRAM, 6.5 hours of talk time under the best network conditions/coverage with continuous talking and a fully charged battery.