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

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

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

Track system:  StereoDual Sound Track
Battery capacity: 2200mAh
Driver units: 43+6Ω8W*2pcs+4Ω15w*1pcs
Impedance: 6Ω,4Ω
Rated power: 31w
Driver power: 8W*2/15w*1
Color: Black
Charging time: 4h
Talk time: 12h
Music play time: 12h
Bluetooth Protocol: A2DP / AVRCP / HFP / HSP
Frequency range:100Hz-20KHz
Input voltage: DC5V-500mA
Bluetooth frequency: 2.4GHz-2.480GHz
Optimal talking distance: 〈1M
Transmission Distance:  10Mbarrier-free space)
voice prompt:   Yes
multipoint connection:   Yes
Instruction:  Chinese & English

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

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