1. Model: T28
2. Bluetooth version: V5.0
3. Standby time: 300 hours
4. Talk time: 3.5 hours
5. Music time: 3 hours
6. Charging time: 1 hour
7. Bluetooth frequency: 2.402G-2.480G
8. Charging compartment capacity: 500mAh
9. Earplug capacity: 35mAh
10. Communication distance: 10 meters
11. Support agreement: HSP, HFP, A2DP, AVR CP

Bluetooth version: V5.0
Standby time: 300 hours
Talk time: 5 hours
Music time: 4 hours
Charging time: 1.5 hours
Bluetooth frequency: 2.402G – 2.480G
Charging compartment capacity: 300mAh
Earplug capacity: 50mAh
Communication distance: 10 meters
Supporting protocols: HSP, HFP, A2DP, AVRCP
Material: ABS + silicone
Charging compartment size: 6 x 2.5 x 2.5cm
Earphone size: 2 x 2cm

Brand: Awei
Model: Y333
Bluetooth-compatible chip: Zhongke Lanxun
Bluetooth-compatible version: 5.0
Bluetooth-compatible frequency: 2.4GHz
Battery capacity: 1800mA/3.7V
Bluetooth-compatible transmission distance:> 10m
Bluetooth-compatible transmitting frequency: Class 2 (2.5mW)
Bluetooth-compatible antenna: built-in
Bluetooth-compatible protocol: A2DP/AVRCP/HFP/HSP
Rated power: 5W*2
Distortion degree: THD＜1%
Frequency response range: 60Hz~16kHz
Signal to noise ratio: ≥90
FM frequency bandwidth range: N
FM antenna: N
Battery life: >3.5H (100% volume)
Charging time: <3H
Working voltage: DC 3.3V-4.2V
Charging voltage: DC 5V±0.2V
Charging current: ≥1A
Charging interface: Micro_USB
Product size: 460mm*78mm*74.5mm(L*W*H)
Product weight: 980g

• Bluetooth Version: V5.0
• Play Modes: Bluetooth, AUX, USB Flash Disk
• Drive Units: 58mm 40
• Rated Output Power: 25W x2
• SNR: >90dB
• THD: <10%
• Frequency Response Range: 60Hz-20KHz
• Transmission Distance of Bluetooth: >10m

Bluetooth Version: 5.1

Battery Capacity: 45mAh

Capacity of Charging Case: 390mAh

Input Charging Standard: DC5V

Product Color: Black

★Charging time: 1.5H

★Talk Time: 4H

★Play Time: 3.5H

★Standby Time: 300H

Best Transmission Distance <1M

Maximum Transmission Distance: 10M

Impedance: 16Ω±15%

Sensitivity: 93dB

Frequency Response Range: 20HZ-20000HZ

ANC Active Noise Cancellation.
Control Button: Yes
Volume Control: Yes
Style: Ear Hook
Bluetooth Version :5.0
Charging bay: 320mAh, earplugs: 40mAh
★Talk time: 3 h.
★Music playback time: 4 h.
★Standby time: 200 h.
Waterproof: Yes; IPX4 waterproof