X-mini II Capsule speaker Instruction Manual - page 6
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Technical Specification
Dimension
: 55mm × 44mm (closed resonator)
Net Weight
: 83g
Speaker
: Magnetically Shielded 40mm (4Ω)
Loudspeaker Output : 2W
Frequency Response : 100 Hz-20 kHz
Signal-to-Noise
: ≥80dB
Distortion
: ≤1.0%
Playback Time
: up to 12 hours
Battery Voltage/Capacity
: 400mAh
Battery Charging Voltage
: 4.2V±0.05V
Battery Charge Time : 2.5 hours