Hi,
Just wanted to share this after reading really good reviews I purchased this mobile a few weeks back and I can honestly say its the best thing I have bought for DD. She will happily lie there for 20mins-45 mins in the morning and sometimes throught out the day for 10/20 mins.. throughly excited .. which means I get extra time in bed in the morning 
Its the tiny love classic mobile!! Have a look.. (works better to develope/stimulate I find that actually get baby to sleep)
Bliss!
x