Key benefits Versatile playback options: supports Bluetooth 5.0 wireless connection and card playback with card support, giving flexible listening options. Durable, compact design: aluminum alloy construction with a 36 mm diameter driver for portable use. Clear, wide range sound: 4 Ω impedance and 3 W output with frequency response from 20 Hz to 20 kHz. Reliable wireless range: up to 10 meters in open space; signal may be affected by walls or buildings. Easy operation and reliable power: operates at 3.7 V with charging voltage of 5 V; battery capacity 300 mAh; play time about 13 hours. Simple controls: adjustment method via button for quick menu navigation and playback. Specifications Voltage: 3.7 V Charging voltage: 5 V Speaker specifications: 4 Ω 3 W Diameter: 36 mm Frequency response: 20 Hz 20 kHz Transmission range: up to 10 meters, data measured in open unobstructed place; walls and buildings may affect signal transmission Material: aluminum alloy Bluetooth specification: 5.0 Play time: about 13 hours Battery capacity: 300 mAh Function introduction Speaker type: cardtype Bluetooth speaker Adjustment method: button Functional features: Bluetooth connection, card support Use scenarios Home or office use: enjoy music or audio playback via Bluetooth or card when you want a compact speaker nearby without wires. On the go or outdoors: lightweight design with up to 10 meters of wireless range makes it suitable for picnics, walks, or small outdoor gatherings. Travel or bedside use: reliable playback from either Bluetooth devices or microSD cards, convenient for a quick listen in tight spaces.