●Frequency range: 2.400GHZ-2.4835GHz ●Sensitivity: -35dB ●Battery: 450mAh ●Power supply mode: built-in lithium battery 5V ●Use time: 15 hours ●Use distance: 30 meters ●Transmitter size: 80mm ●Transmitter weight: 30 grams ●Microphone direction: one-way ●Connection method: 2.4G technology ●Wide range of compatibility: amplifiers, buses, speakers, mixers/sound cards, home theaters, sound bars ●Automatic pairing and connection when booting up without frequency pairing ●High-sensitivity condenser sound head, with noise reduction sponge, clear sound ●Long-lasting and , the battery can be recharged ●Small and portable, easy to use [30M long distance reception] [Multiple sets are used at same time without frequency channeling] Color: Black Material: plastic Package Contents: 1 * Transmitter 1 * Microphone 1 * Data cable 1 * 3.5mm adapter Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.