I have this lamp very satisfied since half a year and I am so far. The lamp has an incredible light output for its size, excellent battery yield, a balanced illumination and for an LED lamp a very pleasant Lichfarbe. The LD10 is supplied with a wrist strap, a removable belt clip, a replacement seal cap for the switch, two spare sealing rings and a protective pouch. The Schtztasche is locked with a velcro, and has a robust plastic strap mount soewie two belt loops on one of these loops can be opened with Velcro, and the other is sewn closed. We have in addition to the LD10 Premium R5 in the household also LD20 Premium R5. Despite differences in the manufacturer's instructions, no difference in the brightness of these lights can be established. Cone of light and illumination are the same anyway. A very small difference can be seen only with the light color, the LD20 lights up a bit warmer. I think that but for manufacturing tolerances. The heads are mechanically identical, just to cover the operation. Of course, the LD20 will hold out longer as it takes two instead of just one AA battery. Both lamps hollow from the cells an incredible amount out, stay up to the end and then turn pale at first to small brightness before they go out. Certainly can use to shock the lamp; but I think the mode switching to this purpose for too cumbersome, because this takes place in two locations: between two base brightness is selected by rotating the head. And to select additional gradations and the respective strobe mode ("flashing") scans to the main switch on the back. In the darker head setting are three levels of brightness and an SOS signal with maximum brightness to choose from. In the bright head setting you change with the switch between very bright continuous light and the fast shock flashing. If you will be under attack, it is likely to be time and nerves difficult to find the right attitude. If you want to use the still, you should absolutely select at least the bright head setting before entering the dark park. In the flash program you must then unfortunately after switching still change, because the basic setting after switching is the continuous light. In dark head setting after switching the weakest luminosity is preselected. Both Blink programs I personally find redundant, since I use the lamps to the geo-caching, so in order to give light. Often you change this, the brightness levels, on the one hand not to attract attention with unnecessary bright light and to conserve battery power when little light is sufficient. If one looks on the other hand more distant objects, of course, the high brightness is required. It's always annoying when you have to palpation the Blink program when changing. One advantage of the LD10 over the LD20 is of course the smaller length. Another is that they, if one has assembled the belt clip, head first put in the bag can. This has on the one hand after taking off right in his hand, on the other hand allows the rear fixed to the lamp Strap still use with protection pocket and finally it fits well with the strap attached at all in the bag. (This is in the LD20 is not the case because the wrist strap applying too much.) There are two lamps to further, optional accessories such as color filters, diffuser, bike and head support. The lamp continues without restrictions with a NiMH battery. Granted, the lamp is very expensive. However, one should juxtapose the technical data for the price comparison with models from other manufacturers sure. Then it appears that this lamp is often with much larger models in the competition and the price into perspective, the very compact design is the ultimate benefit. The only downside is this fact due a lack of adjustability of the light cone. This disadvantage is however countered by a clever profile of the cone: A bright center with a large weakly lit environment. Thus, the illumination is well suited to the physiological characteristics of the eye. I have the adjustment option, which I have with other lamps constantly used - had to use strictly speaking, never missing at this lamp.