Bluetooth Speaker = 4000MAH power bank + Led ligh flashlight + Built-in microphone + Handsfree for calls + Waterproof + Shockproof + Dustproof1. 11 hours of music playback， Enjoy music anytime， anywhere2. HiFi，Subwoofer，Stereo sound3. Built in microphone handfree for calls4. 4000MAH Power Bank To charge the phone anytime，anywhere5. IPX4 Grade Waterproof， excellent for Outdoor Sport and exercise and Travel6. Led light flashlight��?Convenient for outdoor activities at night7. Radio featuresNote: Do not soak in water;NFC function only for android.Product Features:1. Bluetooth Resolution:CSR 4.02. Water resistance:IPX43. Housing material: Silicone4. Operating distance: (free space)up to 10m 5. Talk/music playtime: about 11 hours6. Frequency response: 20Hz-20kHz7. Battery Li-ion:3.7V8. Battery Capacity:4000mAh9. Audio input:3.5mm Jack Cable and power connector10. Speaker size: 156mm x 51mm x 51mmPackage:1 x Bluetooth Speaker1 x Micro USB charging cable