Technics EAH-AZ60P-S Bluetooth Headphone Teardown - iFixit
Amazon.com: Technics Premium Hi-Res Wireless Bluetooth Stereo Headphones with 40 mm Dynamic-Tuned Drivers, 3-Mode Active Noise Cancelling, Ambient Sound Enhancer and Playback Pause Sensor - EAH-F70N-S (Silver) : Electronics
Amazon.com: Technics Wireless Noise Cancelling Headphones, High-Fidelity Bluetooth Headphones with Multi-Point Connectivity, Impressive Call Quality, and Comfort Fit - EAH-A800-K Black : Musical Instruments
Amazon.com: Technics Premium Hi-Res Wireless Bluetooth Stereo Headphones with 40 mm Dynamic-Tuned Drivers, 3-Mode Active Noise Cancelling, Ambient Sound Enhancer and Playback Pause Sensor - EAH-F70N-S (Silver) : Electronics