This is a very lightweight helmet or mounted camera designed for active outdoor sporting use (snowboard, ski, cycling, etc.). It is primarily a helmet cam, but has other mounting options for goggle straps, bike helmets, handlebars, rollbars, etc. Think of a dashcam for bikes! PLUSES: Small, lightweight, good ergonomics on the switch, multiple mounting options, durable, water resistant. Solid construction. very good video for such a tiny camera. All self-contained. MINUSES: no video screen or hookup to see if you are acquiring the image you want in real time. It has aiming laser-pointers so you know where you're acquiring, but you have to download to a computer to see what you have. Low light capability is not that great. Further testing on this as I try it as a tactical camera. Sound is so-so. Pricey. New, so untested yet, but Twenty20's other cameras have done well. USES? Training videos; helmet cam for tactical officer, bike officer, civil disturbance; fun activities, play-time (you need to do more of this anyway, right?) VHOLDR.COM What's in the Box: VholdR VholdR Software Helmet Mount USB Cable Battery Quick Start Guide Video: Video Processing: FineLine™ Hardware Encoding Video size pixels (lines):640x480 (480 lines) Frame rate: 30fps File Type: mpeg4 Video rate: 50min/GB Avg. battery life: 2 hours Lens: Type: 1/4" 4G Size: 3.6mm Viewing Angle: 90° Audio: Waterproof Microphone Sensitivity (0dB=1V/Pa, 1KHz): -44±2dB Direction: Omni-directional Frequency Range: 100-10,000Hz Inputs/Outputs/Controls: Media: MicroSD Battery: Removable lithium polymer Output: Mini USB 2.0 Slide lock on-record/off-stop switch Push button battery/memory life indicator Camera: Sensor Type: CMOS Quality: Minimum illumination: 0.04 Lux @f/1.2 High sensitivity for low-light operation Low fixed pattern noise, anti-blooming, zero smearing Low power consumption Size and Weight: Height: 95mm (3.75 in.) Length: 53mm (2.1 in.) Width: 34mm (1.35 in.) Weight: 4.8oz