BT 5.1 technology brings higher data transfer speed, more stable performance, and lower power consumption. With TWS technology, left and right earphone channels are separated. You can use the earbuds solely or in pairs. Auto fast pairing between left and right earbuds when taking out of the charging box. Easy and quick to pair with BT-enabled audio devices. Equipped with a 1200mAh charging box to charge the earbuds. Built-in Microphone delivers clearer and more real talking sound. It will bring you a perfect user experience.

Features:

TWS BT5.1:

Wireless dual ear design, you can use the earbuds solely or in pairs. BT 5.1 brings higher data transfer speed, more stable connection, and lower power consumption.

Fast & Easy Paring:

Auto power on and fast pairing between left and right earbuds once taking out from the charging case. Easy and quick to pair with BT-enabled audio devices.

Long Battery Life:

40mAh battery in each earbud offers about 5 hours of music playing time. The earbuds can be charged automatically in the 1200mAh charging box.

Hands-free with Dual Mic:

Built-in dual Mic delivers clearer and more real talking sound in stereo mode. BT5.1 chip enables to grasp the detail of voice greatly.

Battery Digital Display:

LED battery digital display can clearly show the battery allowance of the earbuds and charging box. Charging box can work as a mobile power source to charge mobile devices in an emergency.

Smart Touch Control:

Touch control design, no more pressure on your ears. Easy to control music, volume and call, and activate voice assistant.

Specifications:

Brand Name: Lenovo

Model Number: QT81

BT Version: BT 5.1

Transmitting Distance: 10m/33ft (no obstacle)

Drive Unit: 13mm

Frequency Range: 20-20KHz

Sensitivity: 98±3dB

Impedance: 32Ω

Charging Box Capacity: 3.7V 1200mAh

Earphone Battery Capacity: 2 * 3.7V 40mAh

Music Play Time: about 5 hours (depends on music volume)

Waterproof: IPX4

Color: Black, White (Optional)

Earbud Size: approx. 4.1*1.7*1.6cm/1.61*0.67*0.63in

Earbud Weight (Each): 4.0g/0.14oz

Charging Case Size: approx. 8.3*4.8*3.0cm/3.26*1.89*1.18in

Charging Case Weight: 70g/2.47oz

Package Size: 14.0*11.2*3.8cm/5.51*4.41*1.49in

Package Weight: 130g/4.58oz

Package List:

1 * Pair of Earbuds

1 * Charging Box

1 * Charging Cable

1 * User Manual

Description: 

Earbuds: Wireless 

Range:10m(in an obstacle-free environment) 

Battery Capacity: 43mAh(per earbud) 

Charging Time: Approx.1.5h 

Talk Time:Approx. 4h 

Standby Time: Approx. 150h 

Input:5V==100mA 

Battery Type: Lithium Polymer Wireless 

connectivity: Bluetooth 5.0 

Bluetooth Profiles: HFP/A2DP/HSP/AVRCP 

Included: 1pair* Earbuds 4*Earbuds Cap 1*Battery Case 1* User Menu

Specification:

Headphone battery capacity: 38mAh 

Charging box battery capacity: 260mAh 

Charging Type: Charging box USB socket charging, headphone magnetic charging 

Headphone charging time: About 40 minutes 

Charging case charging time: About 1 hours 

Headphone life time: About 6 hours 

Speaker: F10 True copper speaker 

Manipulation Mode: Button 

LED Display: Intelligent digital display of power Bluetooth

Pairing Steps (When using single headset) : 

1.To pair the bluetooth headset for the first time, the distance between the bluetooth headset and your phone device must be within 1 meter when pairing 

2.When the headset is off, press and hold the button until the red and blue lights flashes alternately 

3.Start the bluetooth pairing on your phone device 

4.Search for the bluetooth device 5. The blue light will flash if paired successfully 

Note : Please repeat the above instructions if the pairing is unsuccessful TWS Headset Pairing Steps : (2 headset working at the same time) 

1.Pair the right headset first with above mentioned instructions for single pairing 

2.Then pair the left headset 

3.After successfully pairing both headsets to the device (Both headsets must show blue flashing lights), power off both the headsets and then power back on. This will allow the device to resets and connect both headsets automatically 

4.In the TWS mode, incoming and dialing calls will have sound only on the main headset (Right headset)

Note : When the headsets are in the TWS mode, it can’t connect two devices at the same time

Feature:

1.TWS True wireless Bluetooth headset,a pairs of headsets for left and right ear 

2.Travel mountain sports essential, wear 260mAh charging box, no need to worry about no electricity. 

3.Support two Earphones to connect a mobile phone. 

4.Using high-quality materials, long service life

5.Lightweight and portable

Package Including:

2 * Bluetooth Earphone 

1 * Charging box 

1 * USB charging cable 

1 * Manual

Type: In Ear

Brand: WUW

Color: Black

Connectivity: Wireless

Model Number: R37

Package Width: 15.8 centimeters

Package height: 3 centimeters

Compatible with: All

Package thickness: 18 centimeters

External Product ID: 111111

Manufacturer Number: WUW-R37

Package weight in KGs: 200 grams

External Product ID Type: Not Available

Amazon’s Description

Manufacturer Number : WUW-R37

Microphone included : Yes

Noise Cancelling : No

External Product ID : 111111

Brand : WUW

Connectivity : Wireless

External Product ID Type : Not Available

Model Number : R37

Type : In Ear

Compatible with : All

PRODUCT PARAMETERS

Bluetooth version: Blue Teeth 4. 2

Frequency range: 2.4GHz

Working range: 10m

Standby time: more than 200 hours

Music playback: more than 10 hours

Charging time: about 2 hours

Talk time: 10 hours or more

supporting agreement:

A2DP, AVRCP, HSP, HFP

Frequency response: 20-200000Hz