Leading sports focussed, wireless Bluetooth headsets specialist Jaybird has released details of its new X4 series wireless earbuds. To hit shelves worldwide this month, the new X4 sees Jaybird further evolve its award-winning X-series product. Not only sweat proof, it’s now waterproof as well and boasts a more comfortable fit. There’s also custom sound and eight hours of battery life on top of that, plus a dedicated smartphone app available to both iOS and Android to help better manage your tunes for your workouts and runs. It will be available at major retailers at a recommended retail price of US$129.99 (approx. RM537.83).