The SA4000 - it's an SA1200 + SA1300 + 7-color backlight. Welcome to, say, 2004, Philips. Reminds me a lot of Cowon's iAudio 4. A whopping 512MB of memory too; you're being too generous. An easily-replaceable battery is fine by me, but if it poops out after 10 hours or so... err, yeah - pass.

Seems to be no real point behind this thing, since the company is already offering various (affordable) entry-level DAPs as it is. Just take that SA9200 and up it to 4, 6 or even 8GB; then we'll continue our conversation.

• Backlight : yes, Seven colour backlight
  
• Lines of text : 2, resolution : 32 x 128
  
• Output power (RMS) : 2 x 3 mW, S/N ratio : > 85 dB
  
• Supports MP3, WAV, Windows Media™ Audio
  
• Built-in microphone : Mono
  
• Built-in memory capacity : 512 MB (NAND Flash)
  
• Mass storage class compliant : yes, PlayforSure Compliant: yes
  
• USB : High-speed USB 2.0
  
• Product dimensions (WxDxH) : 31.5 X 23 X 77.8 mm
  
• Battery type : AAA / LR03 Alkaline
  
• Playtime on external battery : Up to 10 hours

LINK