Mini Sports Bluetooth Speaker Portable Stereo Sound Loudspeaker Outdoor Walking MP3 Music Player with Microphone Support TF Card FM Radio: Built-in digital radio chip, stronger signal, listen to more radio stations, with headphone jack, plug in headphones, you can listen to high-fidelity sound quality quietly anytime and anywhere. Bluetooth 5.3: Built-in 5.3 Bluetooth chip, low power operation mode, improve the connection rate and stability. Small size and big volume, easy to carry and at the same time can meet the needs of a small number of people to use together, indoor and outdoor are good to use. TF Card Playback: After inserting the memory card, you can directly switch to the TF card mode to play the pre-stored music in the card. Hands-free calling: One key to answer, free your hands, no need to hold the phone can easily and clearly talk. Convenient Wearing Style: You can wear it around your waist, in your pants pocket, or in your pocket. Fitness data broadcasting: One button to broadcasting exercise data, fitness steps, calories, to help you keep abreast of your physical condition, understand the fitness data. Audio type: portable bluetooth audio Sound system: stereo Powered passive: active Control mode: button Expanded storage: TF card Bluetooth version: 5.3 Rated Power: 5W Frequency Response: 80Hz-15Hz Signal-to-noise ratio: 45dB Speaker Unit: 1.25 inches Distortion: 0.5 percent Battery Capacity: 500mAH Sound Size:50x25x82mm Power supply: lithium battery Stereo Color: Blue/Black/ Functional features: call function, one key answer, voice prompts. Color: Green Material: ABS Package Contents: 1 * Bluetooth speaker 1 * Charging cable 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.