The GPRS connection ensures high-speed data transmission so users have quick access to Internet content via the XHTML browser. The Nokia 3595 also offers Java support for downloading business applications onto this phone. For fun, the Nokia 3595 has preloaded polyphonic ring tones, wallpapers, animated screen savers, and picture messages, plus the memory to download more. The device also features four games (Backgammon, Sky Diver, Air Glide, and Bowling), and changeable covers in various colors. The phone book in the Nokia 3595 holds up to 500 contacts with up to five phone numbers and three text entries for each contact. Other standard organizational features include a calendar with up to 500 entries, a to-do list with up to 30 entries, and an alarm clock with snooze. The phone book, calendar, and to-do list can all be synchronized with a PC using SyncML software over the WAP connection. For hearing-impaired customers, the 3595 even offers TTY/TDD (Telecommunication Device for the Deaf) compatibility with the phone adapter. The extended Li-Ion battery is rated for up to 5.5 hours of digital talk time and 10 days of digital standby time.