The BOYA BY-MM1 is a compact cardioid on camera microphone, only 81mm (3") long and 86gm (3.04oz) heavy, which is very lightweight and easy to carry.
Cardioid Microphone Capturing and Delivering Crystal-clear sound With a high-quality cardioid directional microphone, it captures the forward sounds and reduces sounds pickup from the sides and back, and delivers crystal-clear audio to your recording device.

Features:

• Work with smartphones, DSLRs, PCs, Consumer camcorders etc.
• Ideal for recording on vlogs, video-making and more.
• Compact and portable.
• With cardioid polar pattern. 
• No battery required, plug and play. 
• 3.5mm TRS and TRRS cable, furry windshield and carrying pouch included.

Specification:

• Transducer: Electret Condenser
• Polar Pattern: Cardioid
• Frequency Response: 35-18,000Hz +/-3dB
• Sensitivity: -42dB +/- 1dB (0dB=1V/Pa, 1kHz)
• Signal to Noise Ratio: 76dB SPL
• Plug: 3.5mm TRS and TRRS connection
• Dimensions: Φ22*81mm
• Net Weight: 86g

Items included:

• BY-MM1 Microphone: 1
• Shock Mount: 1
• Fur Windshield: 1
• 3.5mm TRRS to TRRS Cable: 1
• 3.5mm TRRS to TRS Cable: 1
• User Manual: 1
• Warranty Card: 1