Features: Advanced Connection: BLE5.0 wireless connection, quick pairing, features stable signal transmission and 10m effective range, not easy to be interfered, for ideal for film & vlog recording, live streaming, interview, etc. Compact and Lightweight: small in size and light in weight, does not take up too much space, can be easily put in the pocket or bag, also can be held in hand. Condenser Microphones Design: built-in microphone and noise reduction chip, effectively filter noise, supports 360° omnidirectional pickup with clearer sound, also comes with an external lapel microphone, which allows users to record more flexibly. Built-in Rechargeable Battery: built-in 1200mAh-2000mAh rechargeable battery, also it can be powered by 2x AAA batteries, and working for time is up to 60H after fully charging. Back Clip Design: backside clip design, can be fixed on collar easily and quickly. Specifications: Material: ABS+Metal Colour: Black Size: Approx. 6.8x4.4x1.9cm/2.68x1.73x0.75 inch Name: Lavalier Wireless Microphone Type: Lavalier/Clip-on Model: BT8 Wireless Microphone Microphone Type: Condenser Pointing Feature: omnidirectional/non-pointing Built-in Battery Capacity: 1200mAh-2000mAh Battery Life: more than 12 hours Signal-to-noise Ratio: ≥60dB Frequency Response Range: 30Hz-15kHz Sensitivity: -30±3db BT Version: BLE5.0 Working Time：60 Hours Operating Distance: 10 Meters Battery: also can be powered by 2x AAA batteries Indicators: Yes(Red means power on, blue flashing indicates waiting for connection, blue means connected) Package Includes: 1x Lavalier Microphone with Receiver 1x Earphone note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you mind. Due to the difference between different monitors, the picture may not reflect the actual color of the item.