Specifications: Wireless Frequency Band: 2.4GHz Effective Distance: Outdoor ≤ 30m/98ft ≤ Wall penetration 15m/49ft Delay: ≤ 12ms Lithium Battery: 500mAh Signal to Noise Ratio: -98dB Dynamic Range:>105dB Response Rate: 20~20kHz,+1dB/-3dB Transmitters Size: 6.2 * 4 * 1.7cm/2.4 * 1.6 * 0.7inch Receiver Size: 6.2 * 4 * 3.3cm/ 2.4 * 1.6 * 1.3inch Transmitters Weight: 29g/1oz Receiver Weight: 32g/1.1oz Note: Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Features: 1、High-Quality In-Ear Monitor System: Our wireless ear monitor utilizes advanced 2.4G wireless transmission frequency, ensuring crystal clear audio and an immersive listening experience for professional monitoring applications. 2、Seamless Compatibility and Versatility: Our in-ear monitor system is compatible with 99% of audio devices, including mixing consoles, sound cards, smartphones, and more. No complicated setup required - simply plug and play. 3、Reliable Long-Distance Reception: Experience freedom of movement with our wireless in-ear monitor headphones. Our system provides effective reception up to 30 meters outdoors and 15 meters indoors. 4、Simultaneous Multi-Channel Usage: Our in-ear monitor system supports up to 6 sets of products to be used simultaneously in the same location. This means multiple performers or team members can monitor their individual audio feeds without interference or signal degradation. The one-second pairing function ensures effortless synchronization between the transmitter and receivers. 5、Extended Battery Life and Easy Switching: To keep up with demanding performances, our in-ear monitors are equipped with built-in rechargeable lithium batteries, providing long-lasting power. The transmitter allows seamless switching between stereo and mono modes, catering to different audio scenarios. Our system also supports multiple receivers simultaneously receiving signals from a single transmitter. Packing List: 1 x Transmitters 1 x Receiver 1 x 6.35mm Adapter 1 x Earphones 1 x Audio Cable 1 x Charging Cable