PRS-T1 Power source Built-in rechargeable battery: 3.7 V DC, 1000mAh USB powered from a computer or the optional AC Adapter PRSA-AC10/PRSA-AC1A (sold separately) via the supplied USB cable. Battery life (continuous page turn) Maximum Battery: Approximately 14,000 continuous page turns when reading only.* * Measured using a text based content in ePub format and a fully charged battery, consecutive pageturns at approximately one second per page under the recommended operating temperature. Actual battery life may vary based on usage patterns and individual device. Charging time Computer-based charging: Approximately 2.5 hours AC Adapter PRSA-AC10/PRSA-AC1A (sold separately)-based charging: Approximately 2 hours Internal Memory Capacity (for data storage) Approximately 1.4 GB after initial setting. Depending on size of pre-loaded excerpts, available memory capacity may vary. Operating/Charging temperature 5°C to 35°C (41°F to 95°F) Dimensions (w/h/d) Approximately 110 × 173 × 8.9 mm (4 3/8 × 6 7/8 × 3/8 inches) Mass Approximately 168 g (5.9 oz.) Display 152.4 mm (6 inch) diagonal electrophoretic display 600 × 800 pixels, 16-level grayscale Wi-Fi Wireless standards: IEEE 802.11b/g/n compliant Wireless security: WEP (Open System), WEP (Shared Key), WPA-PSK (TKIP), WPA-PSK (AES), WPA2-PSK (TKIP), WPA2-PSK (AES) Expansion slots microSD card slot Supplied items USB cable × 1 Stylus × 1 Quick Start Guide SD cards are made to standards and are commonly used as storage media for portable devices. microSD and microSDHC cards are members of the SD card family. The Reader supports the following card types. microSD and microSDHC cards Up to 32 GB microSD cards of up to 32 GB has been tested to work with the Reader; however, not all microSD cards are guaranteed to work. Supported File Types The following files can be managed on the Reader software and transferred to the Reader device. However, depending on the file size and format, it may not be possible to view/display/play some data. Books EPUB files (.epub) EPUB (OPS version 2.0) supported. PDF files (.pdf) Support is based on the PDF 1.6 specification. Text files (.txt) Audio MP3 files (.mp3) The following specifications should be met in order to import an MP3 file: Bit rate: 8 to 320 kbps Sampling frequency: 8 to 48 kHz File must be unsecured. AAC files (.mp4, .m4a) Raw AAC is not supported. The following specifications should be met in order to import an AAC file: Bit rate: up to 160 kbps Sampling frequency: 8 to 48 kHz File must be unsecured. Pictures JPEG files (.jpg, .jpeg) GIF files (.gif) PNG files (.png) BMP files (.bmp)