One Keychain Cable That Does It All OTG and 240W Fast Charging
Nobody wakes up in the morning thinking about their charging cable. That is exactly the problem. Cables are the thing you only notice when something goes wrong when your phone is dead and the cable you needed is sitting at home on your desk. A keychain charging cable fixes this quietly and permanently by making your cable part of your keys. You cannot leave your keys behind without noticing. So you cannot leave your cable behind either.
What makes the GrunX Sonic genuinely different from other multi-cables is the OTG support built directly into the cable. OTG, or On-The-Go, means you can plug a USB drive into your phone without needing a separate adapter. If you move files between your phone and a pen drive regularly, or need to access media stored on a USB device, this matters a lot. Browse the full GrunX OTG and USB Hub collection to understand the complete range of OTG solutions available.
The Sonic also handles 240W charging via USB-C to USB-C, which is enough for most laptops on the market today. Switch to a USB-C to Lightning connection and it drops down safely to 27W for iPhone smart power negotiation built into a cable that lives on your keyring. It is a neat piece of engineering for something that small. Get yours from the GrunX Sonic keychain cable product page at ₹799 with free shipping on orders above ₹399.









