FiiO M21 4+64g Android music player, smart lossless HIFI music player, portable Snapdragon680 3.5mm+4.4mm, customizable Mp3 plug

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Especificaciones technology
Dimensions: Approximately 68 mm x 121 mm x 17 mm
Weight: Approximately 193 grams
Main controller: Qualcomm Snapdragon 680
System :Android13
DAC chip :CS43198*4
Screen: Fully integrated 4.7-inch screen (750×1334)
Battery capacity :4000mah
Power supply: Supports PD2.0 and PD3.0 PPS fast charging
Battery life: 15 hours on a single end, 11.5 hours in balance
Working memory :4gb
Internal memory/available memory :64gb/approximately 52gb
Memory card expansion: Standard TF card slot, compatible with 2tb
Headphone output interface: 3.5mm single-ended PO/LO/SPDIF + 4.4mm balanced PO/LO
USB interface :USB type C 3.0 * 1(Charging/Data Transfer)+
Power supply Type C * 1 (charging interface/independent power supply)
Bluetooth version :5
Bluetooth transmission :AAC/SBC/aptX/aptX HD/LDAC/LHDC
Bluetooth reception :SBC/AAC/LDAC
Output power 1:L+R≥950mw + 950mw (320/THD+N<1%/ large ear mode/balanced)
Output power :L+R≥185mW+185mW (3002/THD+N<1%/ Large ear mode/balanced)
Output power :L+R≥405 mW+405 mW (320/THD+N<1%/ single-ended mode/large ear)
Output power :L+R≥45mw + 45mw (300/THD+N<1%/ single-ended mode/large ear)
Output power :L+R≥750mW+750mW (320/THD+N<1%/ Balanced/high gain)
Output power :L+R≥290 mW+390 mW (320/THD+N<1%/ single-ended/high gain)
Signal-to-noise ratio :≥126 dB (A-weighted)
Low noise :< 1.6 ultraviolet (A-weighted)
Output impedance :< 10
THD+N: < 0.0003% (1kHz/ -4dB@322)
Servicio postventa
Shipment time :48 hours for shipment.
Customer service communication: Encourage communication with customer service to address any issues
Quality Assurance: For products with quality issues, the seller shall bear corresponding responsibilities, but not limited to refunding the purchase price.
Return service: Return due to quality issues, free delivery. Buyers who have not received the product can immediately request a refund.
Transaction protection: Ensure the security of the buyer’s payment.
Feedback and evaluation: Buyers can send feedback and evaluations on the seller’s services, and we will correct our own shortcomings.