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: 3-4 Hours Play Time: 6-7 Hours Driver Size: 4" + 1.5" Driver Power: 10W + 5W Sensitivity: 80dB Frequency Range: 100Hz---20kHz 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