SONY ERICSSON T237 Estimated talk time: up to 12 hours Estimated standby time: up to 14 days Weight: 79.2g (2.8 oz) Size: 10.1 x 4.3 x 1.8 cm Internal Display: Colour screen 4,096 colours STN, 101 x 80 pixels Dual-band phone (1900 and 850 MHz) for North America GPRS handset for mobile Internet (WAP) Data transmission connectivity (RS232 and USB cables) PC synchronization (cable - sold separately) MMS enabled Voice-activated functions Handsfree speaker Polyphonic ring tones (downloadable via WAP sites) Built-in vibrating call alert, phone book, games, clock, alarm clock, calculator and calendar SAR Radio frequency emission rating: 1.18 W/kg