DUOECHO
Stereo Portable Wireless speaker
Model: SSP3224-40
1. Product Description
A pair of wireless speaker that can be used either individually or both together in True
Wireless Stereo (TWS) mode
2. In the box
Micro USB charging cable
Documentation
One pair of 2.2 channel portable wireless speaker
3. Product characteristic
【TWS mode】can be used as a pair for enhanced experience
【Lossless sound quality】aptX support for superior quality music
【Single speaker mode】speaker can be used individually for ease of portable
【Use of high quality electrolytic capacitance】finer high frequency and deeper low
frequency
【Built-in microphone】 hands-free call
【Longer battery life】 built-in high capacity lithium battery for USB charging
【Easy control】 one key control; Power, wireless pairing, phone answering
【Portable】small and ease of portable
4. Product appearance
5. (Product user manual)
Multi-function button definition:
Short press: press time 0.2s
Long press: press time 1s
Short press twice: press time 0.2s, press interval 0.4s
Very long press: press time 3-4s
Power up:
Very long press 3-4s, power up sound indication (increasing volume) and
blinking of blue light
To use TWS mode, both speakers need to be turned on
Wireless pairing (TWS mode):
After powering up, L and R each short press twice. A continuous white
light will be indicated.
After both speakers are paired, long press on either of the speakers to
pair it with device.
After TWS pairing is completed, Twin mode pairing will be prioritized
thereafter
Wireless pairing (single speaker mode):
Long press when the speaker has turned on. A blue light indication
appears, and pairing with device can be performed. A white light
indication will appear after pairing with device is completed.
Shut down:
Very long press 3-4s, power off sound indication (decreasing volume).
In TWS mode, if one of the pairs is shutdown, the other pair will
automatically shut down as well.
Function key
definition
Press time
Basic
function
Incoming
call function
Short press
Press time 0.2s
Accept/End
call
Short press
twice
Press time 0.2s, press interval 0.4s
TWS
pairing
Hold call
Long press
Press time 1s
Single
speaker
pairing
Reject
call/Mute
Very long
press
Press time 3-4s
Power
on/off
Press time 10-15s
Reset
speaker
Sound playback / pause, track change, volume adjustment:
Control via mobile phone app.
Hands-free function:
If there is an incoming call when the wirelessly connected to mobile
phone; short press to accept the call, long press to reject the call. To end
current call, simply short press.
(In the TWS mode, a pairing between mobile phone and speaker is
required to use such function)
To mute/unmute an incoming call
During an incoming call, short press twice to mute, and short press twice
again to unmute.
(In the TWS mode, a pairing between mobile phone and speaker is
required to use such function)
To hold a call:
If there is an additional incoming call during a phone call, long press to
hold current call and accept incoming call, long press again to return to
the original phone call.
(In the TWS mode, a pairing between mobile phone and speaker is
required to use such function)
Reset:
Continuous long press for 10-15s will reset wireless speaker
Light indication
Wireless speaker base light indication
Power on: blinking blue light
Single speaker pairing: blue light
Dual speaker (TWS mode) pairing: blue light
Pairing between speaker: white light
Incoming call: fast paced alternating blue and white light
Connected call: slow paced alternating blue and white light
Mute incoming call: blinking white light
Battery status display
Fully charged: three continuous white light
75% charged: two continuous white light
40% charged: one continuous white light
>10% charged: one blinking white light (there will be four continuous sound
indications at an interval of 30s)
Battery charging display
Orange light indication will appear during charging. When the battery is fully charged,
three white lights will be shown. If the battery is charged more than 3.5 hours after it
is fully charged, all three white light will be turn off, and the charging is terminated. It
is advised to disconnect USB charging cable to avoid potential hazardous.
Product Charging
Please use the provided micro USB charging cable, 5V/1A charger
Product specification
Product function: wireless speaker, built-in speaker, can be paired with mobile phone
for phone conference
Wireless reception distance: approx. 10 meter (with no interference)
Music format: SBC, aptX, aptX-LL, ACC decoder
Distortion rate: <3%
Signal to noise ratio: >70dB
Sound pressure level: 87dB (0.5m)
Frequency range: 120Hz – 20kHz
Charging voltage: 5V/1A
Charge time: approx. 2 hours
Play time: approx. 6-10 hours (depending on usage)
Rated power: built-in lithium battery 3.7V 1400mA/h
RF power: 9.683mW
Carrier frequency: 2402-2480MHz ISM Band Total 79 Channel
Modulation mode: GFSK,π/4-DQPSK, 8DPSK
Antenna type: FPC Antenna with -2.23 dBi
Product maintenance and warranty
The product should be avoided from: placing the product in an environment with
temperature of too high or too low, liquid, flame, humid area, use solvent to wipe,
dismantling, throw, heavy pressure, scratch, and wear. Quality problems attributed
by these factors, as well as human error are not within the scope of warranty. When
returning product, it is required to retain product integrity (including packaging, the
product, and accessories).
Warranty duration: one year
Assembly origin: China
Development and design origin: Taiwan
Product material: Aluminum alloy, SPCC, ABS + PC, Lithium battery
Low power RF product warning
The product has been verified for low power RF usage, no parties are allowed to
change the frequency, power or change the original design features and functions
without permission.
The use of low-power RF product shall not affect the safety of air navigation and
interference with lawful radio communications specified in the Telecommunications
Act. When interference phenomena are found, the product should be immediately
deactivated and improved to the point where they are no interference. Low-power
radio-frequency products are subject to interference from lawful radio communication
such as telecommunications, industrial, scientific and medical radio-frequency
electrical equipment.
Federal Communication Commission Interference Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one of the following
measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
FCC Caution: Any changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate this equipment.
This transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter.
Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment.
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