Sennheiser MKE 400 - - Highly directional on-camera shotgun microphone with integrated features to enhance dialogue and in-camera audio.
Sennheiser MM 400-X Bluetooth Headphones Review - YouTube
Cameron Sino 270mAh Battery for Sennheiser PXC 310,MM 400,MM 450,450 TRAVEL,550 Travel,PX 210 BT,PX 360,MM 550,PX 310 BT - AliExpress
Sennheiser MM 400-X Bluetooth Headphones Review - YouTube
Dave's Faves: Sennheiser MM400 Bluetooth "Cans" - DavidTarver.com
Cable Assembly for MIC-400 with 3.5 mm Stereo Locking Connector For Sennheiser Wireless Transmitter - Translation Equipment
Red 3.5mm Audio Cable AUX Cord For Sennheiser MM-400 X BT Headphone | eBay
SENNHEISER MKE 400 - Shotgun microphone (supercardioid, condenser) for cameras with hot shoe mount and 1/8" (3.5 mm) jack. Includes (1) 1/8" (3.5 mm) TRS Mini cable, (1) AAA Alkaline battery and (1) foam windscreen
Sennheiser 450 TRAVEL 550 Travel MM 400 MM 400-X M Replacement Battery: BatteryClerk.com Headphone
Sennheiser MM 400-X Review
Sennheiser MM 400-X review | What Hi-Fi?
Sennheiser HD 400 Pro Reference Headphones | Sweetwater