HP iPAQ 510 Voice Messenger. Display: TFT. Processor clock speed: 200 MHz, Processor family: Texas Instruments OMAP 850 Texas Instruments OMAP 850 processor, Built-in processor: OMAP 850. Wireless technology: GSM/GPRS/EDGE; 802.11b/g; Bluetooth. Power supply type: AC, Battery type: Talk time: up to 6.5 hours Standby time: up to 7.8 days (188 hours). Compatible operating systems: Windows Mobile 6 Stadard