Nokia 1661

Physical features, power and memory

Size
* Form: Candybar
* Dimensions: 4.25 x 1.80 x 0.53 in
* Weight: 2.90 oz
Display and 3D
* Main display
- Size: 1.8"
- Resolution: 128 x 160 pixels
- Up to 65,000 colors
- TFT
Keys and input method
* Numeric keypad
* Dedicated speaking clock key
* Large keys - easy to use
Colors and covers
* Available in-box colors: Black
Connectors
* System connector: Easy flash II
* 2.5 mm Nokia AV connector
Memory
* Up to 4 MB internal memory
Power
* BL-4C 860 mAh Li-Ion battery
* Talk time (maximum):
- Up to 3.9 hours
* Standby time (maximum):
- Up to 21 days

Communication and navigation

Operating frequency
* Dual-band GSM 850/1900 MHz
Call features
* Integrated hands-free speakerphone
* Number screening for messaging and calls
* Automatic answer with headset or car kit
* Call waiting, call hold
* Call timer
* Logging of dialed, received and missed calls
* Automatic redial
* Speed dialing
* Fixed dialing number support
* Vibrating alert
* Mute/unmute
* Conference calling with up to 3 participants
* Time tracker
Messaging
* SMS with support for concatenated SMS for long messages
* SMS storage: up to 250 messages on phone
* Speed dialing for SMS sending
* Multiple SMS deletion
* Common inbox for SMS messages
* Distribution lists for messaging
* Chat via SMS
Only devices that offer compatible multimedia message or e-mail features can receive and display multimedia messages. Content appearance may vary. Some images and ring tones can not be forwarded

Image and sound

Music and audio playback
* FM radio (requires wired headset to be attached)
* Ringtones: 32 polyphonic ringtones and MP3-grade ringtones (built-in)
Voice and audio recording
* Supported formats: FR, EFR, HR, AMR
Personalisation: profiles, themes, ring tones
* Customizable profiles
* Ringtones: 32 polyphonic ringtones and MP3-grade ringtones (built-in)
* Ring tone composer
* Themes
- wallpapers
- animated wallpapers
- organic wallpapers
- full-screen wallpapers
- pre-installed themes
- changeable color themes
- user defined themes