Clear voice, clear sound - The cardioid pickup pattern of these microphones delivers warm, crisp and clear vocal sound, designed to make everyone sound better than any JBL PartyBox. Reduce all unwanted noise - The shock mount system reduces the sound of the microphone passing from one hand to the other, while the built-in pop filter eliminates any extraneous breathing sounds you don't want , that they are part of your performance. Easy to use - Just plug in and start singing. It really is that simple. Compatible with all PartyBox speakers - From PartyBox Encore to Ultimate, you can use microphones with any JBL PartyBox speaker. Sing the night away< /strong> - Keep the party going all night long with up to 20 hours* of gameplay. (*up to 12 hours of playback when using a digital wireless dongle.) Rechargeable battery - Just plug the mic into the JBL PartyBox charging port when the battery is low. You can continue to use it while charging. 10 minutes of charging will give you another two hours of playback. Stable 2.4 GHz connection - When using the digital wireless dongle, you have a stable 2.4 GHz connection within 30 meters from PartyBox. So don't be afraid to go out and work with the crow Specifications - Carrier frequency: 2404 - 2478MHz - Encryption: AES - 128 - Range: 30m - Latency: < 12ms - Frequency / channel selection: Adjustable channel selection - Frequency response: 50Hz - 15KHz - Dynamic range: 100dBA at 1KHz - Signal to noise ratio: 59 dBA - THD: < 1% at 94 dB SPL, 200 - 10 KHz - Transmit power: < 10dBm - Maximum receiver output level: < 1 V RMS - Microphone dimensions (W x H x D): 45.5 x 224.5 x 42.5 mm - Dongle dimensions (W x H x D): 42 x 96.5 x 18 mm - Batterymicrophone charging station: 600mAh, 3.7V Li-ion battery - Dongle battery: 700mAh 3.7V Li-ion battery - Microphone playback time: up to 20 hours - Dongle playback time: up to 12 hours - Microphone battery charging time: < 2.5H in off state - Key battery charging time: < 2.5H in off state