Big Bird Wireless Rechargeable Bluetooth Speaker Features: Wireless USB Port FM Radio Aux-In TF Card Walk & Talk Function Rechargeable Battery Crystal Clear Sound Explosive Bass Specifications: Bluetooth Version: V5.0 Bluetooth Range: 10m Supported Profiles: L2CAP/A2DP Battery: 3.7V 1800mAh, Rechargeable li-ion Charger Input: 5VDC/0.5A Charging Time: 2-3 Hours Play Time: 3-4 Hours Driver Size: 2.75"x2 Driver Power: 5W + 5W Sensitivity: 80dB Frequency Range: 80Hz---100kHz Max. Size for SD Card or Flash USB input: 32GB What's in the box 1 x Speaker 1 x Charging Cable 1 x User Manual