• Chip: Telink
• Product size:86*54*1.8mm
• Material: PC
• With wireless charging function
• IP68 Waterproof
• Battery: rechargeable Li-ion battery 155mah
• Works with iOS & Android dual system

Advantage：

• Dual System Compatibility, Covering Global Users：Compatible with both iOS and Android systems, no dedicated APP required. Covers 99% of global smartphone users with no device threshold, for a much broader market reach.
• Ultra-Thin Card Design, Fits Wallet Card Slots ：Same size as standard bank cards, with an ultra-thin 1.8mm thickness. It can be directly put into regular card slots of wallets and card cases, no extra carrying needed, easily realizing wallet anti-loss, perfectly adapting to users' daily wallet usage habit.  
• Wireless Charging, Cable-Free Convenience ：Supports wireless charging function, no cable needed. You can charge it directly on mainstream phone wireless chargers, no need to prepare a dedicated charging cable, more convenient for charging, fitting  users' usage habits. 
• Low-Power Chip, Long-Lasting Maintenance-Free Endurance :Equipped with Telink low-power Bluetooth chip, paired with 155mAh large-capacity Li-ion battery. It supports ultra-long endurance on a single charge, no frequent charging needed, with low maintenance cost, completely eliminating charging anxiety.