NOKIA 8390 Estimated talk time: Up to 4 hours. Estimated standby time: Up to 16 days. Weight: 2.9 ounces Mobile Messaging: e-mail and text messages. mobile chat. predictive text input. Phonebook with up to 500 contacts; up to 5 numbers and 4 text fields per contact Record memos and conversations for up to 3 minutes Voice dialing for up to 10 numbers SAR Radio frequency emission rating: 1.05