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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
Length, mm
Width, mm
Height, mm
Weight, gr
Type of packagingBox
Unit number per packing1
Length of package, cm
Width of package, cm
Height of package, cm
Weight of package, gr
EAN1:4892519101318
Quantity of consumer packages, pcs6
Length of the box, cm48.6
Width of the box, cm35.2
Height of the box, cm38
Gross Weight, kg12.3
Net Weight, kg11.4
EAN2: