Hyunwon named their mobiBLU DAH-1900 as B153 simply because its extreme long battery life. The company claims that it has the world longest battery life, which is 153 hours. Because of that, iMP3 did three detailed tests, which from 21st March 2006 to 9th April 2006. The results prove that mobiBLU B153 can even play more than 153 hours! The tests were run with OLED display switched off, 128kbps MP3, and normal EQ. The results are as follow:

1. 21st March, 10am to 26th March, 10pm - 132 hours played
2. 27st March, 9am to 2nd April, 2pm - 160 hours played
3. 3rd April, 9am to 9th April, 10pm - 157 hours played

Besides, the editor also discover the secret of its superb battery life after dissecting mobiBLU B153!

First, mobiBLU B153 comes with a huge built-in Li-on battery, about half of its size. However, battery power is not stated on it. But, the most important part its core - NEXIA NX5850, which is rarely seen.

Here is some brief information about NEXIA NX5850:

• Supports MP3, WMA, WMA DRM9, ASF
• Supports 4GB NAND Flash max
• Supports SMC, MMC, SD card
• Up to 75 hours with single AA battery
• Supports SRS WOW
• Build-in FM Tuner
• Supports MTV (Video with MP3 audio) @ 1.8″ 30fps, 128kbps
• Supports VOIP, Bluetooth, Game

It seems that Hyunwon has not made use of capability of NEXIA NX5850. The chip is potential to be developed for a feature rich model!

Reviewed by [iMP3 ]