Boomboxes features: Portable Wireless Bluetooth Speaker Mini Style Pocket-sized Music Sound Box With Microphone Support Tf Card Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Features:[Advanced BT Technology]Wireless BT 4.2 technology ensures transmitting strong signal in high quality and offering high-fidelity stereo music. [High-quality Sound Effect] BT 209 with high-quality speaker and vibrating diaphragm, deIivers clean and great sound quality, the sound will fully fill the room. [Hands-free Call] Hands-free calling function setts your hands and ears free. With built-in HD microphone, it performs outstanding sound quality when answering calls. [Endurance Time] With build-in high capacity rechargeable 450mAh batttery, it provides 4 hours of working time. Powered by the included Micro USB port. [Portable Design] Portable, Light-weight, Pocket-sized, this Bluetooth speaker allows you to take it anywhere, like climbing,hiking,driving and more. Specifications:Brand Name: AECModel: BT209Color: Black, Silver (Optional)BT Version: 4.2BT Profiles: A2DP, AVRCP, HFP, HSPBT Communication Range: About 10m, (without obstacles)Wireless Output: Class2: +4dBm (-6 +4dBm)Wireless Band: ISM Band: 2.402-2.480GHzPassword: 0000Battery:Battery Type: Lithium Polymer BatteryCapacity: 3.7v 450mAh, 1.67wBattery Life: Cycle Charge 500 TimesWorking Time: About 4 hours Calls & Music (middle volume)Charge Time: About 2 HoursHorn-speaker:Speaker Size: 32mm 1Speaker Impedance: 4ohmOutput: 5W 1Frequency Response: 200Hz 20,000HzSensitivity: 95dBmDistortion: 5%Speaker:Microphone Sensitivity: -45dbStandby Current: 1mAConsumption: 42mAI500mA;0.15 WP1.85 WCharge Port: Micro USB, DC5VProduct Size: 91 * 47 * 20mm / 3.58 * 1.85 * 0.79inProduct Weight: 81g / 2.86ozMaterial: Aluminum, ABS, PU leather, Metal CoverPackage Size: 11.4 * 11.4 * 3.5cm / 4.49 * 4.49 * 1.38in Package Weight: 143.2g / 5.05ozPackage List:1 * Speaker1 * USB Cable1 * Sling1 * User Manual (English / Chinese)