Yamaha YHWL-500 Wireless Headphones (YHWL-500) Ultra-low latency (less than 4ms) preserves timing and feel Specially optimized for musical instruments Semi-open design reduces ear fatigue Bluetooth connection for music playback Up to 9 hours of battery life Ultra-High Speed Wireless Stereo Headphones for Musical Instruments Yamaha YH-WL500 headphones were designed in collaboration with Line 6—combining decades of expertise in audio and wireless technologies. Featuring ultra-low latency response, and optimized for use with musical instruments, they also provide Bluetooth support. Designed and Optimized for Musical Instruments Optimized for use by musicians who want to enjoy the freedom and convenience of wireless headphones while playing through any amplifier, multi-effects processor, or instrument with a headphone output. Ultra-Low Latency Thanks to exclusive Yamaha ultra-high-speed technology, musicians experience less than four milliseconds of latency, perfectly preserving the timing and feel of their performance when practicing. Semi-Open Design YH-WL500 headphones are exceptionally comfortable to wear and their semi-open design greatly reduces ear fatigue, making them ideal for even the longest practice sessions. Bluetooth Support Bluetooth capabilities make it easy for players to play along with tracks in their music libraries. Latency Comparison While the maximum acceptable latency (playback delay) standard for professional musicians is 10 milliseconds, YH-WL500 headphones achieve ultra-high-speed transmission of less-than 4 milliseconds. This provides a wireless playing experience equivalent to that of using a cable, something that was previously impossible with Bluetooth headphones (which can have up to 200 milliseconds of latency).