Grandstream WP810 Wi-Fi, 2 SIP, 2 Lines, Silver//Dual-band Wi-Fi with efficient antenna design and advanced roaming support2 SIP accounts, 2 linesHD voice & dual MIC design with AEC and Noise Shield TechnologyRechargeable 1500mAh battery, 6 hour talk time, 120-hour standbyConfigurable button for push-to-talkMicro USB port and 3.5mm headset jackhttps://www.grandstream.com/products/ip-voice-telephony/wifi-cordless/product/wp810