The BenQ-Siemens EF51 is a compact flip phone released in the mid-2000s, known for its stylish design and music-focused features. Below are its key specifications and a summary of customer reviews:

Specifications:

• Display: 1.8-inch TFT, 128x160 pixels (internal), 1-inch OLED, 96x64 pixels (external)
• Camera: 1.3 MP, no flash
• Storage: 20 MB internal, expandable via microSD (up to 1 GB)
• Music Features: Dedicated music keys, MP3 player, stereo speakers, 3.5mm headphone jack
• Connectivity: Bluetooth, USB 2.0
• Battery: 750 mAh, up to 5 hours talk time, 300 hours standby
• Dimensions: 91 x 46 x 16.8 mm, 85g
• Other Features: FM radio, voice recorder, Java support

Summary of Customer Reviews:

• Pros:

  • Sleek, lightweight flip design with a unique circular external display.
  • Good sound quality for music playback with loud stereo speakers.
  • Dedicated music buttons for easy control.
  • Decent battery life for a music-centric phone.

• Cons:

  • Low-resolution camera with no flash.
  • Limited internal storage without a microSD card.
  • Build quality felt somewhat plasticky and less durable.
  • Basic software with occasional lag.

Overall, the EF51 was praised for its music capabilities and stylish look but criticized for its average camera and build quality.