User's Manual

ManualsBrandsLindero ManualsAudio EquipmentTRUE WIRELESS EARBUDS

产品结构说明

包

装清单

以上图片仅供参考，请以实物为准！

充电座耳机 x 1 耳机 x 2

耳机1对，充电盒1个，大中小耳帽各一对（中号佩戴在耳机上），数据线1根，说明书1本

说明书 x 1

耳

帽 x 3 数据线 x 1

LED指

示灯

充电Type-C端口

左/L

多功能按键（MFB）

LED指示灯

开

机

方法 1：耳机放在充电盒，打开盖子，取出双耳机，橙白灯亮 1 秒，即开机；

方法 2：关机状态下，耳机在充电盒外，触摸 1 下，橙白灯亮1秒，即开机。

方法 1

从充电盒中取出双耳机 , 耳机自动开机并进入配对模式，LED 橙白灯交替快闪，即进入手机配

对模式；打开蓝牙设备，并在设备列表中选择“ H21B”并连接，即配对成功 ;

方法 2

在开机未连接状态下，双击左耳右耳多功能键进入手机配对模式；LED 橙白灯交替快闪；

打开蓝牙设备，并在设备列表中选择“H21B”，并连接，即配对成功。

（注意 : 如果耳机已连接设备 1，则设备 1 的蓝牙请关闭蓝牙功能，然后尝试与设备 2 配对。）

重置和清除配

对

耳机在充电盒外，长按多功能键约8秒释放并在10秒内双击多功能键，白灯快闪 , 进入自动

配对模式，即重置完成。

关

机

方法 1：开机状态，将耳机放入充电盒内，橙灯常亮，即关机；

方法 2：开机状态下，耳机在充电盒外，长按左右耳多功能键 3s 后释放橙灯亮 1s，即关机。

多功能键

使用

长按1

秒

长按2秒

左

耳

长按2秒

快速按2次

长按2秒

右

耳

通透模式 /

通透模式关

快速按3次

启动SIRI

快速按3次

产品使用

说明

蓝牙配对

通透模式

常见问题

在待机状态/音乐状态下：

您可以通过打开通透模式来捕获周围的声音。当您要

关注环境情况或进行对话时，此功能

非常方便。

操作方法：长按右耳多功能键2秒钟释放，进入通透模式;以通透模式→通透模式关闭的

顺序切换。

Q: 无法连接到手机：

1. 确保本产品电量充足，已开机，并与手机配对建立连接完成。

2. 手机的蓝牙功能启动。

3. 本产品与手机之间的距离是否超过 10 米（约 30 英尺，以及二者之间是否存在着墙壁等

障碍物或其他电子设备。

4. 请恢复至出厂设置后重新配对。

Q: 听不到任何声音

请尝试调高手机音量。

Q: 听到杂音

蓝牙为一种无线技术，这意味着它对本产品与配对设备之间的物体非常敏感。其设计使用

条件为：本产品与配对装置间相距不超过 10 米，两者之间不存在大的障碍物（如墙面等）。

备注：若于户外吵杂的环境下，可能会影响声音效果。

● 本产品由充电电池供电。新电池只有在经过两、三次完全充电和放电的周期后才能达到较

佳性能。电池可以重复充电、放电，但最终会失效。

● 如果把本产品放在过热或过冷的地方，如在夏天或冬天将其放在封闭汽车里，会减少电池

的容量和寿命。应尽量将电池温度保持在 15℃和 25℃之间。本产品电池过冷或过热可能会使

其暂时无法工作，即使电池电量充足。当温度远低于冰点时，电池的性能尤其受到限制。

● 请勿将电池掷入火中，以免电池爆炸。受损电池也可能会爆炸。请按当地规定处理电池。

请在可能的情况下回收电池。不可将电池作为生活垃圾处理。

温馨提醒：本产品若不常使用，请每三个月充放电一次，避免电池过久没使用，而造成

电池损坏。

电池信息

右/Ｒ

H21B

真无线蓝牙耳机使用说明书

使用前请阅读使用说明

1 pair of ear

buds, 1 charging case, 3 pairs of tips (size: S, L; M tips already on the earbuds),

1 USB cable, 1 User Manual.

HearT

hrough Mode

ommon questions

Q: Unable to connect to phone:

1. Ensure that the product has suﬃcient battery, has been turned on, and has been paired with the

phone to establish connection.

2. The phone’ s Bluetooth activates.

3. Whether the distance between the product and the phone is more than 10 meters (about 30 feet),

and whether there are walls, other obstacles or other electronic devices between them.

4. Please reset to factory settings and then re-pair.

Q: No voice heard

Please try to turn up the phone's volume.

Q: Have noise

Bluetooth is a wireless technology, which means it is very sensitive to objects between the product

and the device it is paired with. The design conditions for use are: the distance between the product

and the matching device is no more than 10m, and there is no big obstacle (such as wall) between

the two. Note: The sound eﬀect may be aﬀected in noisy outdoor environment.

● This product is powered by rechargeable battery. New battery performs better after two or

● This product is powered by rechargeable battery. A new battery will performance better after

two or three complete charge and discharge cycles. The battery can be charged and discharged

repeatedly, but it will eventually fail.

● If this product is placed in a over hot or over cold place, such as in a closed car in summer or

winter, the capacity and life of the battery will be reduced. It is recommended to store in 15℃ to

20℃ environments. It may not work in extreme cold or hot environment even if it is fully charged.

The battery’ s performance will be restricted when the temperature is far below freezing.

● Do not throw the battery into ﬁre to prevent it from exploding. Damaged battery may also

explode. Please follow the local regulations to deal with the battery. Please recycle the battery

when possible, and do not dispose of it as household garbage.

Warm Tips: If this product is not used frequently, please regularly recharge and discharge it every

three months, to avoid battery damage caused by unused for too long time.

Battery information

In standby state/music state:

You can capture surrounding sounds by turning on the HearThrough mode . When you want to pay

attention to the environment or have a conversation, this function is very convenient.

Operation method: long press the right MFB for 2s to enter the HearThrough mode; switch in the

order : HearThrough mode →HearThrough mode Oﬀ.

H21B

UE WIRELESS EARBUDS USER MANUA

lease read the Manual before use.

oduct Structure Description

acking List

icture only for reference!

Charging Case × 1 Earbud x 2 User Manual x 1Eartips x 3 USB cable x 1

LED light

TYPE-C Charging Port

RightLeft

Multi-Function Button（MFB）

LED light

ower O

ower On

he earbuds will turn on automatically when taken out from the charging case, with orange and

white light is on for 1s;

When the earbuds shut down, touch the MFB once，then the orange and white light is on

for 1s to boot up.

Method 1

Take out two earbuds, they will turn on and enter pairing mode automatically with orange and

white indicator lights twinkling alternately; which enable the bluetooth of your phone to

search "H21B" and then click it for pairing, it will be connected.

Method 2

When the earbuds are turned on and not connected, press twice the left and right MFB to

enter pairing mode with orange and white indicator lights twinkling alternately. Which enable the

bluetooth of your phone to search "H21B" and then click it for pairing, it will be connected.

(Note: If the earbuds have been connected to device 1, please turn oﬀ the bluetooth function of

device 1 and then try to pair with device 2.)

eset

When the earbuds are out of the charging case , long press the left and right MFB for 8s, and then

double-tap the left and right MFB within 10s; the white light will ﬂash quickly, a few seconds later

the earbuds will re-enter the pairing mode

The earbuds will turn oﬀ automatically when put back into the charging case, with the orange

light always on；

When the earbuds is on and out of the charging case, long press the left or right MFB for 3s,

then the orange light is on for 1s, that means the earbuds shut down.

Use of MFB

Use Ins

tructions

Bluetooth pairing

ress for 2s

Press for 2s

Press for 1s

Right

Start SIRI

ress twice

Press twice

Triple Press

Ambient

ON /

Ambient OF

Changes or modifications not expressly approved by the party responsible for compliance could

void the user's authority to operate the equipment.

This equipment has been tested and found to comply with the l

imits 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 or more 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

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.

FCC Statement

Summary of content (1 pages)

PAGE 1
H21B 产品使用说明产品结构说明真无线蓝牙耳机使用说明书通透模式在待机状态 / 音乐状态下：蓝牙配对方法 1 使用前请阅读使用说明从充电盒中取出双耳机 , 耳机自动开机并进入配对模式，LED 橙白灯交替快闪，即进入手机配对模式；打开蓝牙设备，并在设备列表中选择“ H21B”并连接，即配对成功 ; 方法 2 您可以通过打开通透模式来捕获周围的声音。当您要关注环境情况或进行对话时，此功能非常方便。操作方法：长按右耳多功能键2秒钟释放，进入通透模式;以通透模式→通透模式关闭的顺序切换。在开机未连接状态下，双击左耳右耳多功能键进入手机配对模式；LED 橙白灯交替快闪； LED指示灯打开蓝牙设备，并在设备列表中选择“H21B”，并连接，即配对成功。（注意 : 如果耳机已连接设备 1，则设备 1 的蓝牙请关闭蓝牙功能，然后尝试与设备 2 配对。）常见问题 Q: 无法连接到手机：充电Type-C端口 1. 确保本产品电量充足，已开机，并与手机配对建立连接完成。开机 LED指示灯多功能按键（MFB） 2.