Fast and reactive Fast and reactive. Can't tell the difference between this and a wired mouse. In fact, adjust sensitivity settings. Love it!

Durability is a HUGE issue! Really not impressed with the earphones I've bought. I purchased the Sirius P5s and the connectivity of these things is embarrassing. I can't go anything over 2 songs without them cutting out and going fuzzy; the volume is also a huge problem, with one earphone always being slightly quieter than the other. For the love of god, just go for another brand of earphones that are more durable than these. It'll save you the frustration, trust me.

I ordered a 2nd SuperNova speaker I ordered a 2nd SuperNova speaker. UPS lost my package, but GravaStar made it right! Amazing sounding little speakers. The stereo pairing is awesome.

Great product, great service I waited for more than 2 weeks before writing to test the Mercury M1 Pro to the fullest, and my satisfaction is at its peak. The precision is superb, and the design is incredibly original. It has excellent autonomy and recharges very quickly. However, be aware that the photos of the mouse may make it appear whiter than it actually is, but it still remains very beautiful. Also, it is possible that it may not fit every hand size; if you have large hands like a lumberjack, the mouse may seem too small, but if you have small or medium-sized hands, it will be perfect or won't take long to get used to. The efficiency of the customer service is like Italy to cuisine, truly high quality. They are quick to respond and very caring. I highly recommend their products!

Great communication Great communication, was updated step by step the progress of my order. The item itself was really, really cool. Whoever designed and built these earbuds really outdid themselves. I am very knowledgeable in electronics and I was really impressed.