Online tuners are fast replacing the physical tuners. Long gone are the days we had to rely on physical tuners for tuning our instruments - simply get online and you have tons of free softwares that will do the work for you. But for the job that this product was made to do, it works awesomely good. Highly accurate and pitch perfect. Awesome futuristic design. And yes, it is very portable. On top of it, Rs. 500 is a good price to pay for a good chromatic tuner. So if you need a physical portable tuner, look no further, this is the product for you.