NEXTEL I30SX Up to 75 hours of standby time and 2.75 hours of phone talk time or 28 hours of talk on Mike's Direct connect. Weight: 33 grams SIM Card Operation allows users to transfer their billing and phonebook entries from one phone to the next. Internet Access Services One-Touch Private & Group Call T9® Text Input for Fast Entry USB Capability Speakerphone. SAR Radio frequency emission rating: 1.4 W/kg