[globalbuy] Portable Handfree Wireless Bluetooth TF Card Speaker For Mobile Phone/686731
Specification: Output voltage: 3.7V Output power: 3W Input voltage:5.0V Loudspeaker parameter: (internal magnetism) 16 core, 4?, 40mm internal resonance bass membrane. SNR:?80dB Maximum output distortion rate: 0.5 Battery: Li polymer 300mA (built-in) Material: plastic, rubber oil paint Colors: black...