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

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

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

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

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

1, Input voltage: DC 5V charging/discharging
2, Audio input means: Ø3.5mm AUX, Micro-SD (TF) card, U flash disk, Bluetooth signal.
3, LED screen: It can display inputted audio source, FM broadcast, time setting, alarm setting, etc.
4, Power: 5W*2 for audio output / 5W as wireless charge / 10W as power bank.
5, Load of Speaker: 4Ω 5W*2.
6, Battery Capacity: 8000mAh/3.7V
7, Dual alarm setting
8, Product Size: L146*W146*H82.5mm