Feature: 1. Excellent Use Experience: Military headset with detachable microphone for left and right mounting. Biomimetic textured ear cups for a comfortable fit. 2. Unique Design: Bullhorn mount with differential locking distance linkage design, fully adaptable to 19‑21cm/7.5‑8.3in helmet rails. 3. High Flexibility: The military headset has a 360° adjustable stand to provide flexibility in headset placement. 4. Wide Application: Military radio headsets are suitable for use in outdoor sports such as development activities, military games, film and TV props, outdoor activities and role play. 5. Notice: This version has only communication functions, no noise cancellation. The battery compartment does not have any function. This product cannot be used on its own, it needs to be used with a PTT. Specification: Item Type: Military Headset Material: ABS(Shockproof Fibre Additive Type) + Acoustic Cotton + Stainless Steel Batteries: 2 x AAA Batteries (Not Used) Suitable for Head Circumference: 20.5in~25.2in Applicable: For expansion activities, military games, film and TV props, outdoor activities, role playing and other outdoor sports. Features: 1. Detachable microphone: freely adjustable left and right, very convenient. 2. Biomimetic textured ear cups: The ear cups are made of acoustic cotton and ABS (Additional Anti Vibration Fibre) material. Very comfortable to wear. They are comfortable to wear and do not cause pressure over time. 3. Retractable and foldable design: easy to store and adapt to different head circumferences 4. Helmet rail connector: can be fixed effectively and will not fall off easily.. Package List: 1 x Military Headset (Battery Not Included)1 x Talking Mark1 x Screwdriver2 x Screws1 x Manual