3.99 A 5 are a quality / unbeatable price, even the price of batteries .. They are copies of Micro Photon Light, slightly more powerful and better finished, costing 12.99 but the unit (6,90 + port) or more than 10 times more expensive. The white lighting is very powerful for such a small size (I got another vendor blue LED? Back at Amazon). The small hook ring seems light, you can always remove it to use only the large ring. Delivery after ten days without invoice, RAS. Excellent quality / price ratio, advise.