OUTDOOR SPEAKER ADVANTAGES: Stereo Pairing More friends crash the party?Wirelessly Stereo Pairing with a second AOMAIS OUTDOOR Bluetooth speaker and take your sound to a whole new level. The latest TWS(true wireless stereo) technology enables you to use two speakers pairing via Bluetooth to form a wireless left channel and right channel system to deliver true stereo sound effect.Each speaker can also be used separately. Bluetooth Technology CONNECT IN SECONDS，faster than last generation of Bluetooth technology，which make sure the music is played in a more stable and undistorted way Rechargeable Battery Built-in Lithium-ion battery with 1500mAh;can be recharged over 500 circles;only 3 hours could it be fully charged;with 10 +hour battery life at 50% volume 4 Language prompts voice Four prompts languages can be changed(English，French，Spanish，Portuguese)press volume+ and volume- at the same time can change the language Tripod mount 1/4' 20 bulit-in tripod mount for bicycle stand，best speaker choice for cyclist amatuer Applicable situation Compatibility Device:iPhone，iPad，iPod，Samsung，Smartphones，Tablet，PC，Laptop，MP3/MP4 and other devices that support Bluetooth ; 3.5 millimeter audio cable can connnect most device. Hand Free Built in noise-canceling Speakerphone，it takes call which comes in handy when busy for example in the kitchen cooking or in wet conditions 1 Year Guarantee Product quality problem in one year we will 100% return your money back Specifications: Weight:0.71 pound(322g) Rated Power:8 Watts Charging Voltage:5V/1A Frequency Range:120Hz-18KHz Dimensions:3.75*3.75*1.65inch Effective Distance:33ft/10m Battery:Built-in Li-ion rechargeable battery Package Included: 1*Bluetooth speaker 1*3.5mm Audio cable 1*Micro USB charging cable 1*Quick start manual