Features:  Big Power Strong Bass Effect: A90 is a large loud Bluetooth speaker with bass and features a 2 pcs full frequency trumpet+ 2 pcs cool visible radiator design.  16.80M pixels cool light ring，2 display mode: Intelligent mode to rhythm with music and breathing model to display freely.  IPX8 Waterproof: IPX8 waterproof protection safeguards against rain, dust, snow, and spills.  Dual Pairing Wireless Speakers: The speaker supports stereo pairing for added acoustic depth, So you can create an enveloping sound field. Superb quality surround sound experience can be made by simply pairing two of our speakers together. The saying that two will always be better than one proves as a fact with TWS function.  Built-in 8000mAh Li battery: 30+ hours of portable playtime on a single charge. Its compact size and rugged durability make it perfect to take with you. Built-in 8000mAh Li battery.    Specification:  Bluetooth version: BT 5.0;  Output Power: 60W;  Driver unit: 2 pcs 66mm full frequency trumpet+ 2 pcs 78mm radiator;  Channels: 2 (2.0);  Codecs: AAC;  Frequency Range: 20Hz-20KHz;  Storage type: ≤32G Micro SD card;  Support: MP3,WMA,WAV,APE,FLAC;  USB charge (DC5V-2A): About 3.5 hrs;  Power supply: built-in 8000mAh lithium-ion battery;  Waterproof: Yes;  Built-in Microphone: Yes;  Material: Metal;  Size: 250.4*115.2*106.2mm;  Weigh: 1.8Kg;     Packing list:  1 * Speaker;  1 * Type-C Charging Cable;  1 * 3.5mm Audio Cable;  1 * User Manual;  1 * Bag