Bluetooth Speaker, Portable Wireless Speaker with Bass HD Stereo Sound, Waterproof for Home, Outdoors, Travel Features: Studio Sound Quality: The Bluetooth speaker features anti-breaking sound technology. When paired with a second speaker, it delivers a 360-degree surround stereo sound effect. Waterproof Design: The wireless speaker is dustproof, water-resistant, and drop-resistant. It is not designed for prolonged submersion in water. Lightweight and portable, it includes an integrated strap for easy attachment to backpacks or bike handlebars. Ideal for hiking, cycling, beach outings, travel, and both indoor and outdoor use. Bluetooth 5.0 & Dual Playback Modes: Equipped with the latest Bluetooth 5.0 technology, the speaker is compatible with most Bluetooth-enabled devices, including tablets, laptops, TVs, and smartphones. It also supports playback via TF card with a memory capacity of up to 32GB. Power Saving: The built-in 1200mAh lithium-ion battery provides 3 to 5 hours of playback time, depending on volume levels. The speaker automatically powers off after 10 minutes of inactivity in Bluetooth mode to conserve battery life. Product Specifications: Material: ABS + electronic components Product Dimensions: 11 x 11 x 4.8 cm / 4.3 x 4.3 x 1.9 in Power Supply: USB / built-in lithium battery Battery Capacity: 1200mAh, 3-5 hours of playback Transmission Range: 10 meters Charging Voltage: 3.7V, DC 5V Speaker Specifications: 52mm, 4Ω, 5W Frequency Response: 180Hz - 18kHz Signal to Noise Ratio: 80dB Distortion: 0.5% Functions: Bluetooth audio playback, hands-free calling, TF card playback Package Included: 1 x Bluetooth Speaker 1 x USB Cable 1 x User Manual