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PORTABLE RADIOS

SG Model DDR-7 DDR-7X DDR-8 WR-7 PLUS WR-8 WR-9
FM Frequency (MHz) 87.5–108 87.5–108 87.5–108 87.5–108 87.5–108 87.5–108
FM RDS/BDS PS / PTY / RT / CT PS / PTY / RT / CT PS / PTY / RT / CT - - -
TUNER
AM / MW Frequency (kHz) - - - - 522–1710 (9k) 522–1710 (9k)
DAB / DAB+ Channel Block 5A–13F 5A–13F 5A–13F - - -
Memory Presets 20 (10 FM / 10 DAB) 20 (10 FM / 10 DAB) 20 (10 FM / 10 DAB) - - -
TUNING Rotary Tuning O - O O O O
Auto Tuning System / Seek Tuning O O O - - -
Bluetooth O O O O O O
MEDIA
Aux-in O O - O - -
Version 4.1 5.2 5.2 5.1 5.2 5.2
Codec SBC SBC / AAC SBC / AAC SBC SBC SBC
BLUETOOTH AVRCP Play / Pause / Previous / Next Play / Pause / Previous / Next / Rewind / Forward Play / Pause / Previous / Next / Rewind / Forward - - -
A2DP O O O O O O
TWS - O - - - -
Real Time Radio Radio Radio - - -
Alarm - - 1 Set - - -
CLOCK
Snooze - - O - - -
Sleep Timer O O O - - -
Type OLED OLED OLED Dial Scale Dial Scale Dial Scale
Size (mm) 23.7 x 12.9 23.7 x 12.9 37.1 x 19.5 - - -
Size (in) 0.93 x 0.51 0.93 x 0.51 1.46 x 0.77 - - -
Graphic / Character Type Graphic Graphic Graphic - - -
Backlight O - - O O O
DISPLAY Dimmer - O O - O O
Adjustable Screen Contrast O - - - - -
Battery Level Indicator O O O - - -
LED Tuning Indicator - - - O O O
LED Low Battery Indicator - - - O O O
LED Charging Indicator O O - O O O
Speaker Size 40mm / 1.57" 38mm / 1.5" 50mm / 2" 40mm / 1.57" 50mm / 2" 50mm / 2"
Speaker Impedance 4 ohm 4 ohm 4 ohm 4 ohm 4 ohm 4 ohm
Speaker Output (AC / DC Powered) 2W 2W FM & DAB / 4W BT & AUX 2W FM & DAB / 4W BT 1.5W FM / 3.24W BT & AUX 1.8W AM & FM / 4.75W BT 1.8W AM & FM / 4W BT
Speaker Output (Battery Powered) 1.6W 1.6W FM & DAB / 3W BT & AUX 2W FM & DAB / 4W BT 1.5W FM / 3.24W BT & AUX 1.3W AM & FM / 4.2W BT 1.5W AM & FM / 4W BT
Speaker Output (Max) 5W 5W 8W 6W 8W 8W
AUDIO
Amplifier Class D Class AB/D Class AB/D Class AB/D Class AB/D Class AB/D
Earphones - - 1mW x 2 - 1mW x 2 1mW x 2
Stereo - - Earphones - - -
DRC (Dynamic Range Control) for DAB O O O - - -
Loudness - - - - - -
Software Upgradability - USB port USB port - - -
OTHER Lock Switch - O - - - -
FEATURE External FM Antenna - - Telescopic Antenna - - -
Other (Emergency (EAS) / - - - - - -
Aux-in (3.5mm) O O - O - -
Earphone (3.5mm) - - O - O O
I/O USB Socket Type USB Micro-B USB Type-C USB Type-C USB Type-C USB Type-C USB Type-C
SOCKET USB Socket DC In O O O O O O
USB Socket Software Update O O O - - -
External Antenna Port 3.5mm FM Antenna Jack 3.5mm FM/DAB Antenna Jack - 3.5mm FM Antenna Jack 3.5mm FM Antenna Jack 3.5mm FM Antenna Jack
AC / DC DC-in 5V/1A DC-in 5V/2.4A DC-in 5V/2.4A DC-in 5V/2.4A DC-in 5V/2.4A DC-in 5V/2.4A
Battery 18650 Li-Ion Battery 3.63V/2600mAh 18650 Li-Ion Battery 3.65V/2600mAh 18650 Li-Ion Battery 3.7V/2600mAh 18650 Li-Ion Battery 3.6V/2600mAh 18650 Li-Ion Battery 3.7V/3350mAh 18650 Li-Ion Battery 3.7V/3350mAh
POWER
SUPPLY Battery Life (Speaker playback time on built-in battery) 20 hr 19 hr 18 hr FM 24 hr BT 40 hr 54 hr 57 hr
Battery Life (Earphone playback time on built-in battery) - - 19 hr - 70 hr 75 hr
Battery Rechargeability O O O O O O
Charging Cable USB Type-A to Micro USB USB Type-A to Type-C USB Type-A to Type-C USB Type-A to Type-C USB Type-A to Type-C USB Type-A to Type-C
ACCESSORIES
External Antenna FM Wire Antenna FM Wire Antenna - FM Wire Antenna FM Wire Antenna FM Wire Antenna
Width (mm) 116 116 80.2 116 134 80.2
Height (mm) 65 65 137.2 65 82 137.2
Depth (mm) 74 66.7 87.2 73.2 78.7 79.2
Weight (g) 359 374 453 371.8 437 460
DIMENSIONS
Width (inch) 4.57 4.57 3.16 4.57 5.28 3.16
Height (inch) 2.56 2.56 5.4 2.56 3.23 5.4
Depth (inch) 2.91 2.63 3.43 2.88 3.1 3.12
Weight (lb) 0.79 0.82 1 0.82 0.96 1.01
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