Description <br />Bluetooth Speaker = 4000MAH power bank + Led ligh flashlight + Built-in microphone + Handsfree for calls + Waterproof + Shockproof + Dustproof<br /><br />1. 11 hours of music playback｣ｬ Enjoy music anytime｣ｬ anywhere<br />2. HiFi｣ｬSubwoofer｣ｬStereo sound<br />3. Built in microphone handfree for calls<br />4. 4000MAH Power Bank To charge the phone anytime｣ｬanywhere<br />5. IPX4 Grade Waterproof｣ｬ excellent for Outdoor Sport and exercise and Travel<br />6. Led light flashlight ?Convenient for outdoor activities at night<br />7. Radio features<br /><br />Note:Do not soak in water;NFC function only for android.<br /><br />Product Features:<br /><br />1. Bluetooth Resolution:CSR 4.0<br />2. Water resistance:IPX4<br />3. Housing material: Silicone<br />4. Operating distance: (free space)up to 10m <br />5. Talk/music playtime: about 11 hours<br />6. speaker:4 <br />7. Frequency response: 20Hz-20kHz<br />8. SNR: 90dB<br />9. Battery Li-ion:3.7V<br />10. Battery Capacity:4000mAh<br />11. Audio input:3.5mm Jack Cable and power connector<br />12. Speaker size: 156mm x 51mm x 51mm<br /><br />package:<br />1 * S1 bike holder<br />1 * Bluetooth Speaker