Xvive has introduced their new U6 Compact Wireless Mic System for DSLR/video cameras and smartphones. The new U6 offers a built-in microphone featuring high-fidelity 24-bit / 48 kHz audio and True Diversity wireless stability, the ability to hide the transmitter under clothing for all filming purposes, and comes with a shoe mount to fit comfortably atop your DSLR.
The U6 can send a stable wireless signal over 90 feet and has four different channels to choose from, with a latency of 5 ms. The U6 is charged via any 5V USB power source and is available here for $139.