We recently told you about G-Project’s portable, waterproof Bluetooth speaker, the G-Go (see related posts). Now, G-Project is announcing the G-Grip, their new ruggedized, portable Bluetooth speaker. The G-Grip has a rechargeable lithium-ion battery than provides you with up to 8 hours of music between charges. (Charge with a USB port on your computer or with the included charger.) Use it with any Bluetooth-enabled phone, MP3 player, or tablet, or connect a non-Bluetooth to the G-Grip via the 3.5mm audio jack. On-board buttons let you control playback and volume, and it comes with a buckled strap to carry it or clip it to a bag. The G-Grip is rugged and built to last. It’s survived drops of 8 feet and withstood crushing loads of “over 1,300 pounds of weight, all while pumping out loud, clean audio streaming wirelessly”, so it should stand up to your travels – or your kids. The G-Grip speaker is available at Target stores and Target.com for $69.99.