M1 1.3" Large Screen Smart Bluetooth Watch / Dynamic Heart Rate Monitoring / Multiple Motion Mode /IP67 Waterproof - Grey Belts & Buckles and you can use the

and you can use the last customized volumio version from us (Please refer to the [Download Link])

56 MHz Frequency

connect effortlessly in a world without wires

96 inch screen gives you a better user experience

M1 1.3" Large Screen Smart Bluetooth Watch / Dynamic Heart Rate Monitoring / Multiple Motion Mode /IP67 Waterproof - Grey Belts & Buckles and you can use theGeneral Model M1 Quantity 1 piece Material Silica gel Specification CPU Processor MTK2503A ARM7 Screen Size 1. 3 inch Screen Resolution 240*240 Network Type 2G Cellular GSM SIM Card Type Micro SIM Bluetooth Version Bluetooth V3. 0 , Bluetooth V4. 0 Operating System Android 4. 4 , iOS Compatible OS Android IOS Language Multilingual language Wristband Length 22cm Water proof IP67 Battery Battery Mode Non removable Battery Type Li ion battery Battery