Features: - Bluetooth 5.0:Bluetooth 5.0 chip realizes high-quality audio transmission, lower operating power consumption, and more outstanding compatibility and stability.  - High-quality Audio Transmission:High-quality music, low power consumption, no network interference, compatible with mainstream devices, stable connection within ten meters, and extremely fast connection after booting.  - Energy-saving three-level brightness adjustment:Support different brightness adjustment, adjust the brightness flexibly according to your own habits.  - Long Battery Life:Built-in large-capacity rechargeable battery, long-lasting battery life, Bluetooth does not sleep, and brings longer playback time.  - Viper Sound:Shocking stereo bass, 50mm long-stroke loudspeaker, clear and powerful drums, surging stereo bass listening experience.  - FM Radio:While listening to music, it increases the listening pleasure, and listening to favorite radio stations, current affairs, finance, etc. in your free time is even more enjoyable.  - Temperature Display:Real-time temperature sensing device, the ambient temperature is displayed on the screen to remind you.     Specifications : Product Material: ABS Plastic/PC Lens.  Bluetooth Function: Bluetooth+ESR Effective Transmission=10m.  Battery Type: Removable Large-capacity Rechargeable Battery.  Battery Capacity: 1400mA x 2 (Optional).  Product Speaker: 40mm Strong Magnetic Speaker.  Dimensions: 143x33x46mm.     Package Included : 1 x Bluetooth Alarm Clock