DW12 Portable Mini Bluetooth Speaker Transparent PC Wireless Subwoofer Support TF Card (CE Certified) - Dark Blue ?Bluetooth 5.1 technology steam your favorite music without interruptions ?Using high-transparency PC shell,the internal precision components are clearly visible ?High-cost audio processor is used to actively determine the frequency of the audio source signal,automatically set the fine frequency crossover point,expand the system frequency response range,and realize low-frequency,intermediate frequency,and high-frequency distinct clearly ?Outdoor mini portable,enjoy various outdoor scenes anytime,anywhere ?Specification: ?Maximum output power: 5W ?Bluetooth version: V5.1 ?Effective distance: within 10 meters ?Battery capacity: 400mAh ?Signal-to-noise ratio: >90dB ?Speaker: 40mm ?Frequency response: 100-18KHz ?Battery charging time: 3 hours (5V/1.0A input) ?Music play time: 4 hours ?Size: 77*39.5*77mm Package included: ?1 x Speaker ?1 x Charging Cable ?1 x Hand Strap ?1 x English and Chinese User Manual ?Other items not include