Material PVC</br>Functions Sports music speaker for bicycle?? easy to carry?? amazing larger volume?? best sound quality?? structual stability prevent the speaker from broken?? standby time up to 15 hours</br>Other Features Output power: 3W?? Input voltage: DC 5V; File format: MP3; Built-in 850mAh battery?? USB sound card function?? VIFA Hi-Fi sound quality</br>Packing List 1 x Speaker 1 x Strap 1 x Silicone band 1 x English user manual</br>Dimensions (3.54 x 1.69 x 1.69)"4.3 x 4.3) cm (L x W x H) Weight 3.67 oz / 104 g Package Includes</br></br>Product Description</br></br>Brand GACIRON Model B07 Quantity 1 Color Black Material PVC Functions Sports music speaker for bicycle?? easy to carry?? amazing larger volume?? best sound quality?? structual stability prevent the speaker from broken?? standby time up to 15 hours Best Use Cycling Gender Unisex Other Features Output power: 3W?? Input voltage: DC 5V; File format: MP3; Built-in 850mAh battery?? USB sound card function?? VIFA Hi-Fi sound quality Packing List 1 x Speaker 1 x Strap 1