Pentax Optio W20 camera Motorola P790 Charger

Fevzi Turkalp - The Gadget Detective joins Mike Mendoza

On Saturday mornings from 2.00 to 3.00am to answer your tech questions

and take a look at the latest from the world of Gadgets and Technology.

Gadget Detective on

Gadget of the Week

Motorola P790 Portable Charger


This portable charger contains a rechargeable battery. First you charge the P790 using a spare USB socket on your computer or from a suitable mains charger, then you can recharge your pocket device when away from a mains socket, wherever you are and without your mains charger.



Versatile - Recharges virtually any mobile device with a mini-USB socket

Works with mobile phones, Bluetooth headsets, PDAs etc.

You can charge the charger and the device from the same USB socket

Provides around two recharges or a mobile phone or up to 10 recharges of a Bluetooth headset

Much smaller and lighter than a mains charger





No indication of how much charge the portable charger has left

It isnt a second battery for your device but rather a charger for your battery


List Price: £29.99 inc. VAT


Star Rating  7.5 Stars  Versatile, useful and at a fair price


Pentax Optio W20 digital camera



Waterproof and Dustproof (can be used up to depths of 1.5 metres)

Produces high resolution images thanks to the 7 megapixel sensor

3x Optical zoom

Large 2.5" screen

Accepts both SD the new SDHC memory cards. SDHC cards capacity can exceed the 2GB limit of SD cards

Good build quality

Reasonable styling and ergonomics




Still images can only be stored in jpeg format, so no provision for lossless formats such as TIFF or RAW.

Has only 22MB of built-in memory, so budget for a memory card

Takes a proprietary Li-ion battery, so cant accept standard AA batteries


Best Internet Price found: £177 inc. VAT


Star Rating: 7.5  Stars  An evolutionary improvement over Pentaxs earlier waterproof offerings. A good choice if you need or want the novelty of an underwater camera.