The battery pack clips onto the projector's base and can be charged by the projector when it's plugged into mains power or through a USB when it's not. It will run the projector for three hours at a brightness of 150 ANSI lumens, or half its maximum output. Half brightness is quite acceptable with the lights off.

The lamp is an LED with a rated life of 20,000 hours flat out, 30,000 in eco mode. The GS1 has keystone correction so if it's placed above or below centre, the picture can be corrected to fill the screen rather than narrowing at top or bottom. There's Android connectivity to the internet to run Netflix, Stan, Foxtel, Amazon Prime or YouTube, and all the catch-up television apps apart from SBS On Demand. DLNA and AirPlay are also supported.

Inputs consist of a single HDMI, a couple of USBs and a slot for a micro SD card. And there's Wi-Fi and Bluetooth; the Bluetooth for getting sound out rather than programming in and vastly preferable to the two small internal speakers. There' also a 3.5mm audio output.

The unit is compact, weighs just under a kilogram and comes with a carry case and a protective cover in bilious orange.

Picture quality is good — great for a portable — with adequate brightness as long as the lights are down, even at half brightness. Given its flexibility, its ease of operation, its size and its wide range of inputs this is a terrific little projector for the money.