1. [IPX7 Waterproof Rating] This speaker comes with an IPX7 waterproof function. With an IPX7 protection rating, this speaker is suitable for outdoor environments. It can be used in damp rooms or on rainy days, such as in bathrooms, shower rooms, swimming pools, beaches, etc. It can also be immersed in water (for no more than half an hour). 2. [Equipped with a Stand and Hook] The speaker is equipped with a movable stand that can be safely installed on a bicycle. You can also use the provided hook to hang the speaker on a backpack. It is comfortable to carry and suitable for outdoor activities such as cycling, hiking, mountain climbing, camping, etc. 3. [Bluetooth 5.0] The Bluetooth 5.0 version enables a fast and stable connection. It can maintain a stable connection within a working range of 10 - 15 meters, allowing you to enjoy uninterrupted music. 4. [10 - hour Battery Life] It has a built - in 750mAh battery. After charging for 2.5 hours, it can achieve 10 hours of uninterrupted music playback at 60% volume. It is made of robust and high - quality materials, which can bring you powerful bass and stereo effects. 5. [Built - in Microphone] The speaker has a hands - free function. You can not only listen to music or podcasts while driving but also make calls through the built - in microphone. Color: Black Material: ABS + PU Package Contents: 1 speaker 1 stand 1 charging cable 1 audio cable Only the above package contents are included, and no other products are included. Note: Light and different monitors may cause the color of the item in the picture to vary slightly from the actual one. A measurement error of +/- 1 - 3 cm is allowed.