Specification:
*Bluetooth Version: Bluetooth V2.1 + EDR
*Support Protocol: Headset, Hands-stereo
*Standby time: 80 hours
*Operating distance: 10m

Wireless Bluetooth Stereo Headset Headphone Specifications

Switching between music and phone call

(Mobile phone must support A2DP with no internal buzzer)
Built-in microphone (Handfree for mobile phone)
Bulit-in 3.5mm phone jack, Compatible with 3.5mm earphone
A2DP and AVRCP profiles supported (High quality stereo audio stream)
Bluetooth specification V2.1 class 2
Supports Bluetooth Headset & Handsfree profiles
Transmission distance: 10 meters
100-240V AC adapter, US plug type
Rechargable Li-Polymer Battery
Talk time: Up to 6 hours
Standby time: Up to 100 hours
110 ~ 240V AC power charger
Nominal charging time: 3-4 hrs
Dimension: 40mm (H) x 23mm (W) x 10mm (D)
Weight: 14 grams

What's in the box?
1 x Bluetooth headset R5,
1 x USBcharger,
1 x headphone cable,
1 x manual