Features: Omnidirectional external microphone, suitable for Action 2/3/4 sports camera, insert and play. Lightweight design, mini small cube, simple and exquisite design, light weight, no additional burden. Equipped with a professional audional DSP processing chip, it can enable noise reduction processing with one button, effectively recognizing original sound. Built-in large capacity battery, low-power design, long-lasting battery endurances, with a super long no worries ranges of 10 hours. Widely compatible for digital product such as smartphones, tablets, digital cameras, laptops, etc. Specifications: Material: ABS Type: One Drag One, One Drag Two(optional) Applicable Models: for Action 2/3/4 Charging Time: about 2.5hrs Working time: about 10hrs Direction: Omnidirectional Charging Port: Type-C Connection Way: 2.4GHz Receiving Distance: 15-30m/49.2-98.4ft Package Includes: 1 Set Omnidirectional External Microphone 1x Cable 1x Windproof Cover note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.