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Bluetooth Speakers:GM-878B
Device typeWaterproof Bluetooth speaker c FM radio
Power, W15 W
Frequency response100 Hz - 20 kHz
Audio SourcesBluetooth, USB-flash, micro-SD, AUX - 3.5mm, FM-radio
Signal / noise ratio> 70 dB
Number of channels
Speaker2 х 3,81cm, 2 х 1,5W, 4Ω;
Subwoofer10,16cm, 12W, 4Ω;
BluetoothV4.2; A2DP, AVRCP
USB 
microUSB
Wi-Fi Direct
Composite Output
NFC
Number of Audio Input
Headphone jack
Built-in MP3 playermicroSD/USB-flash/AUX-in
Support for Handsfreeno
Screen
FM radio87.5-108MHg
Alarm clock
AdditionallyEqualizer - CLASSIC, POP, JAZZ, ROCK, NORMAL, AUTO
BatteryLi-Ion - 3,7 V, 3000mAh
Operation duration6 hours
Charge time3-5 hours
AdaptermicroUSB charging 5V / 1.0 A (not supplied)
Operating Power Consumption
Stand-by Power Consumption
ColorBlack
Package ContentsSpeaker, Power cable, AUX cable, Strap, Manual/Warranty
EAN13:4892519101318
Height, mm140
Net weight, gr1514
Width, mm330
Depth, mm
Type of packagingColor box
Packing height, mm
Packing width, mm
Packing depth, mm
Package gross weight, gr
Quantity of consumer packages, pcs6
ITF14:
Height of the box, cm38
Width of the box, cm35.2
Box depth, cm48.6
Box gross weight, kg
Net weight of the box, kg