Feature:1. [High Definition Surround Sound] Bike speaker's 8W large speaker independent diaphragm, no loss of HIFI, and immersive hearing. Built in 2200mAh high capacity battery, long battery life.2. [Outdoor Waterproof] Silicone material, comfortable hand feel, IP67 protection rating against rain, dust, snow and spills. Get great sound at home, on the patio, or anywhere else.3. [2 Playback Modes] Meet your daily connection and playback needs. TF card connection, Bluetooth connection, Bluetooth 5.0 upgrade chip, Bluetooth 5.0 multi device compatibility, free hands.4. [True Wireless Stereo Interconnection] The two speakers enter the Bluetooth pair state at the same time (make sure that the Bluetooth is disconnected from other devices), and you will be able to enjoy your favorite songs anytime, anywhere.5. [Comes with Car Mount] Comes with a bike mount for easy mounting on your bike's frame for enjoyment on the go, and a carabiner for maximum portability in a lightweight design. You can take it with you when you travel outdoors.Specification:Item Type: Cycling Bluetooth SpeakerMaterial: ABS, Silicone, MeshRated Power: 8WWorking Voltage: 5V 1AWaterproof Grade: IP67Bluetooth Version: 5.0Support Memory Card: 64G (Maximum)Built in Lithium ion Battery: 2200mAhBattery Model: 18650.Package List:1 x Bluetooth Speaker1 x Bike Mount1 x USB Charging Cable1 x Carabiner1 x Chinese and English Manual