Specifications:Bluetooth version: V2.1RDAWorking distance: 10 metersWorking time: 11 hours (only use the speaker)， 5 hours (lamp with high brightness)， 15 hours (lamp with micro brightness)Battery type: Lithium battery 1800mAh 3.7V (included)Material: ABSPPLamp power: 0.1WInput power: DC 5V / 1000mACharging time: 2.5 — 4 hoursFrequency response: 70Hz — 20KHzSNR: 65dbItem weight: 227g / 8.00ozItem size: 8.6 * 8.6 * 11.5cm / 3.38 * 3.38 * 4.52in (L * W * H)Package weight: 440g / 15.53ozPackage size: 13.3 * 11.2 * 11.2cm / 5.23 * 4.40 * 4.40in (L * W * H)Package List:1 * Bluetooth speaker1 * USB data cable1 * User manual (English)