BD03 Bluetooth outdoor waterproof wireless portable subwoofer English version mobile mini speaker

Speaker type: Belt variable portable Bluetooth speaker Bluetooth version: 5.0 Adjustment method: buttons Features: Bluetooth audio input, Bluetooth hands-free calling, LINE IN, TF card, USB flash drive, FM radio Electric mode: DC 5V, lithium battery (1500mah) Effective power: 5W * 2 Speaker unit: ▽ 50MM Signal to noise ratio: 80DB Distortion rate: 3 Frequency: 90Hz-20KHz Audio interface: 3.5MM Impedance: 4 Ω Playtime: 4 Hours Speaker weight: 470g per unit/576G per set Bluetooth version: Bluetooth 5.0 Packing information: Single machine size: 92 * 92 * 155mm Weight of each set: 576g Packaging size: 16 * 11 * 9.5cm Packing quantity: 30PCS Packing size: 59 * 33 * 31cm Gross weight: g