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Bluetooth Speakers:GM-903B
Power, W28
Frequency response100 Hz - 16 kHz
Audio SourcesBluetooth, microSD, USB-flash, AUX - 3.5mm, FM-radio
Signal / noise ratio> 65 dB
Number of channels
Device typeBluetooth portable speaker with FM-radio and TWS
Speaker2 inches (5.08 cm), 4 Ohm
Subwoofer4 inches (10.16 cm), 4 Ohm
BluetoothV5.0
USB 
microUSB
Wi-Fi Direct
Composite Output
NFC
Number of Audio Input
Headphone jack
Built-in MP3 playermicroSD / USB-flash / AUX-in
Support for Handsfree
Screen
FM radio87.5-108 MHg
Alarm clock
AdditionallyTWS mode
BatteryLi-Ion - 7,4 V, 3000mAh
Operation duration6 hours
Charge time4-6 hours
AdaptermicroUSB charging 5V / 1.0 A (not supplied)
Operating Power Consumption
Stand-by Power Consumption
ColorBlack
Package ContentsSpeaker, USB -microUSB cable, Audio cable AUX, Manual, Warranty
Length, mm343
Width, mm144
Height, mm187
Weight, gr2100
Type of packagingcardboard box
Unit number per packing1
Length of package, cm
Width of package, cm
Height of package, cm
Weight of package, gr
EAN13:4894187306200
Quantity of consumer packages, pcs4
Length of the box, cm38,2
Width of the box, cm36,2
Height of the box, cm43,5
Gross Weight, kg10,2
Net Weight, kg9,5
ITF14: