[PINFIS] Multifunctional back-mounted wired amplifier (BA-9703-A)

https://live.staticflickr.com/65535/54136995013_53fae32968_b_d.jpg https://live.staticflickr.com/65535/54136994993_749a082dd5_b_d.jpg https://live.staticflickr.com/65535/54137169300_08aa668cbb_b_d.jpg https://live.staticflickr.com/65535/54136994953_d23ce2e1a1_b_d.jpg https://live.staticflickr.com/65535/54135863447_30f8bba6d9_b_d.jpg https://live.staticflickr.com/65535/54136709391_e49251ac99_b_d.jpg https://live.staticflickr.com/65535/54136994943_8de9e2f395_b_d.jpg https://live.staticflickr.com/65535/54136994918_9df8171355_b_d.jpg https://live.staticflickr.com/65535/54137042904_e10fe0ca17_b_d.jpg https://live.staticflickr.com/65535/54136994923_27cbfd5fe4_b_d.jpg Product specifications: Operating voltage: 7.4V Speaker: 3.5 inches*1 Battery type: lithium battery 2600mAh Output power: 20W Audio input: AUX/USB/TF Frequency response: 80Hz~18KHz Charging time: 3-4 hours Usage time: 16-18 hours Dimensions: 12.6(L) × 10(H) × 5.6(D) cm Weight: 482g Product accessories: Simple wired type-A: Host*1, head-mounted microphone*1, power charger*1, signal cable*1, strap*1 BSMI commodity inspection font size: R36040 NCC certificate number: Origin: Designed in Taiwan, Made in China Warranty: 1 year (non-human damage)