Specifications:

• Model: MX-SK04
• Wireless Frequency: 2.4-2.48GHz
• Wireless protocols: HS/HF, A2DP, AVRCP, OP
• Can be networked with a calling card
• 40mm speaker unit
• Frequency 100 Hz – 18000 Hz
• Battery Capacity: 500 mA
• Shipping time: 2 hours
• Runtime: 4 hours