The reason why I have deducted two stars, the battery type (and life). On the prices of batteries o. Battery is debatable, but I can not confirm the given here maturities. Batteries (1.5V, 650-850mAh) hold ~ 15 hrs. - MAXIMUM 20h, rechargeable batteries (unfortunately only available with 1.2 V, max 500 mAh) bring any 10 hour burn time...
On the Use ago I would recommend this product highly, but you should be prepared to dispose of a bag of used batteries every few weeks, or to make room enough for 2-4 replacement batteries!