Camera attachments are old hat as phone accessories these days, but the iBlazr 2 has promise.
This wireless flash attachment for iOS and Android phones has a 25m range, while letting you adjust colour temperature in the range of 3200K to 5600K. It uses not one but four LED bulbss for a pretty bright (around 300 lux) flash. Not bad for a tiny attachment.
While the original iBlazr hooked up via a phone's headphone jack, the iBlazr 2 uses low energy Bluetooth to connect wirelessly, which means you can easily use it "off-camera" or even connect more than one iBlazr 2 to your phone for more lighting options.
What it also crams into its tiny frame is a 130mAh battery, which comes with a flexible charger and claims to provide at least 300 flashes (or three hours of continuous lighting) per charge.
The iBlazr 2 is currently crowdfunding on Kickstarter, but its campaign is already fully funded so you can grab one for US$45 (a little over ₹2800). It comes in three colours: black, pearl grey and white.