| | Bluetooth Speakers:GM-904B |
| Power, W | 2 х 10 |
| Frequency response | 70 Hz - 18 kHz |
| Audio Sources | Bluetooth, USB, AUX - 3.5mm |
| Signal / noise ratio | > 65 dB |
| Number of channels | |
| Device type | Portable waterproof Bluetooth speaker with TWS and FM radio |
| Speaker | 1 х 2,0 inches (1 х 5.08 cm), 4 Ohm |
| Subwoofer | 2 х 3,0 inches (2 х 8.89 cm), 4 Ohm |
| Bluetooth | V5.1 +BR +EDR |
| USB | |
| microUSB | yes |
| Wi-Fi Direct | |
| Composite Output | |
| NFC | |
| Number of Audio Input | |
| Headphone jack | |
| Built-in MP3 player | USB-flash / AUX-in |
| Support for Handsfree | |
| Screen | |
| FM radio | FM 87,5-108,0 Mhz |
| Alarm clock | not |
| Additionally | TWS Mode, Dynamic RGB Backlight, IPX5 Waterproof Case |
| Battery | Li-Ion - 3,7 V, 3000mAh |
| Operation duration | |
| Charge time | 4-6 hours |
| Adapter | Type C charging 5V / 1,0-3.0 A (not supplied) |
| Operating Power Consumption | |
| Stand-by Power Consumption | |
| Color | Black |
| Package Contents | Speaker, USB - Type C cable, Audio cable AUX, Manual, Warranty |
| EAN13: | 4894202106204 |
| Net weight, gr | |
| Height, mm | |
| Width, mm | |
| Depth, mm | |
| Type of packaging | cardboard box |
| Packing height, mm | |
| Packing width, mm | |
| Packing depth, mm | |
| Package gross weight, gr | |
| Quantity of consumer packages, pcs | 1 |
| ITF14: | |
| Height of the box, cm | 62,5 |
| Width of the box, cm | 33.2 |
| Box depth, cm | 32,2 |
| Box gross weight, kg | 7,0 |
| Net weight of the box, kg | 5,8 |