Soundtec. Echo flex

Model ID: T36 TWS Sports Earbuds
Bluetooth device name: AWEI T36
Bluetooth version: Bluetooth V5.0
Support mode: L2CAP/A2DP1.2 (AVCTP1.3/AVDTP1.2/AVRCP1.3)
Transmission distance: ≤10 meters (without obstacles)
Speaker diameter: 13MM
Speaker impedance: 32 ohm ± 10%
Frequency response: 20Hz-20KHz
Sensitivity: 92dB/±3dB
Mark wind size: Φ4.0*1.5mm SMD microphone
Mark wind sensitivity: -92dB/±3dB
Output power: 20mW
Working voltage: 3.3V-3.7V
Working time: 4-5 hours
Standby time: 210 hours
Charging time: about 1.5 hours
Battery model: polymer battery 45mAh 3.7V charging compartment 320mAh with protection board
Charging voltage: DC_5V
Applicable products: Apple IPAD, MAC book, I phone, Android phone, PC

– Bluetooth version: 5.0
– Transmission range: 10m
– Supported profiles: HSP, HFP, A2DP, AVRCP
– Earbud battery capacity: 45mAh
– Charging case battery capacity: 390mAh
– Music time: 4h
– Charging time: 1.5h
– Standby time: 300h

Specifications:

– Model: T35
– Talk/music time: up to 4h
– Standby time: up to 300h
– Charging time: 1,5h
– Water resistance: IPX4
– Bluetooth Version: V5.0
– Transmission range: 10m
– Single earbud capacity: 40mAh
– Charger case capacity: 400mAh
– Microphone: Omnidirectional -42±2dB
– Sensitivity: 114±3dB

• Brand: Abingo
• Model: BT10
• Wireless version: 4.1
• Working distance; up to 10m
• Impedance: 32ohm ± 15%
• Speaker: 40mm drivers
• Frequency: 2.4GHz – 2.4835GHz
• Talking/Playing time: about 15 hours
• Standby time: Up to 100 hours
• Battery: 300mAh rechargeable lithium ion-polymer
• Power requirement: 5V DC

-Model number: A770BL
– Bluetooth version: 5.0
– Battery capacity: 250mAh
– Standby time: up to 25h
– Talking time: up to 10h
– Playing time: up to 13h
– Charging time: 1h
– Transmission distance: up to 10m
– Frequency response: 20-20kHz
– Connectivity: Bluetooth, 3,5mm aux-in